A/N: Here's the final part, this was originally only meant to be a one-shot/two-shot but I got a little carried away with it. Thanks so much for reading and for the reviews! :)
Sighing deeply Gibbs reached up to the top shelf above his work bench and grabbed the nearly full bottle of bourbon and a mason jar before pouring himself a decent sized drink. After last night and this morning he was going to have to get pretty drunk to try and forget what it had been like to be with her...but then he didn't want to forget.
He could still smell Abby on his skin, feel her next to him and around him, hear her soft whimpers and passionate moans. She was a part of him now and if he was forced to let her go then he really did have nothing.
Gibbs shook his head, angry at himself for being so willing to give up complete control so easily. He'd been deluding himself when he thought she'd want to be with him permanently, what could he ever offer her that any other man couldn't...a younger man, one without his history and the scars that never healed. He'd hoped Abby was the one to help him finally try and start to move on, not to forget, but to live with his burdens and learn to enjoy life again.
Easing himself down onto the ground Gibbs swallowed his bourbon in several mouthfuls, grateful that he could concentrate on the burn in his throat rather than the ache in his chest, if only for a few seconds.
Abby had said she loved him and Gibbs still believed that, he knew she wouldn't lie about something like that. He assumed that there were more negatives than positives for her to stay with him as more than friends, or more than a one night stand. After spending time away from him she'd realized that, and this was her way of telling him without trying to hurt him.
It was while he was pouring his fifth drink that Gibbs heard the front door burst open, his gaze lifting to the top of the stairs as he heard heavy footsteps running towards the basement. He looked up at Abby from where he sat on the floor leaning back against his workbench, as she came to a halt on the top landing.
"Gibbs?" She said nervously after a moment's hesitation. "Is everything okay?"
Walking slowly down the steps Abby noticed the bottle of bourbon beside him and the glass in his hand. It worried her that he was sitting on the ground, but she managed to control her nerves even though she was scared of what he might say.
He looked worn out and lost, the difference in his eyes since they'd parted hours ago startling her and making her wish she'd stayed with him. It was obvious something was wrong.
"Yeah, Abbs," he answered softly. "You have a good afternoon?"
Gibbs downed his drink in one gulp, not wanting to let Abby see he'd been worried; she was here and that was all he cared about. If he had to fight to keep her he would, he just hoped the right words would come when he needed them.
She didn't offer any further information, instead bridging the distance between them so she could sit down next to him. The gentle kiss she pressed to his lips made Gibbs sigh, his visions of her leaving him so soon dissipating slightly. When he responded to her, Abby deepened the kiss, leaning into him, her fingers clutching at his red hoodie. Holding onto him as if her life depended on it.
"Why are you sitting on the floor?" She asked when they broke apart.
Gibbs thought about making an excuse up, telling her he was tired or not in the mood for doing woodwork, but he knew he had to be honest with her. If he wanted to give them any kind of chance he couldn't shut her out...he needed to face his fears with her and not try and go it alone.
The fact that Abby was here, that she'd kissed him, and her hand was clenched to his hoodie so tightly she'd be able to feel his heart racing underneath made him realize he could've been wrong. But it didn't erase what Gibbs had been telling himself for the last several hours, or how worried he'd been that she'd already left him.
"Thought maybe you'd changed your mind about us." He took a deep breath, cringing at how needy he sounded. "Was gettin' a bit late, figured you might have gone home instead of coming here."
Before he could apologize for doubting her, Abby had grabbed hold of his free hand, resting her forehead against his as she launched into one of her rambles.
"I'm sorry I'm so late, I kept looking at the time and then when Kyle realized I was doing it I had to tell him why...then I figured it wasn't fair to him to be thinking about you the whole time I was with him, so I made myself not look at the time...I tried to call but it went straight to voicemail, I left you a couple of messages..." she trailed off for a moment, her voice lowering before she continued. "I thought when you didn't answer you decided it was a mistake, that we're a mistake."
Gibbs looked up to where he knew his phone sat on the table in the middle of the room.
"Damn phone, I told McGee to fix it...would've answered Abbs, I don't think we're a mistake, far from it. Thought about calling you but didn't want to interrupt your time with Kyle, then I kinda came to the conclusion that you'd decided you can do better than an old broken down Marine."
Abby covered his cheek with her hand, urging him to face her. "Then you'd be wrong, there is no-one better than you, don't want you to ever doubt how I feel about you Gibbs."
He nodded and put his empty glass down on the floor to take her other hand, bringing her onto his lap. Abby sat facing him with her legs on either side of his, her arms resting on his chest.
"Guess we're both so used to thinking this is something we could never have that it's gonna take a bit for us to realize we do have it," she mused.
"I'm sorry I doubted you," Gibbs said, kissing his way along her bottom lip. "Though it was never about you, more about me, I jumped to the wrong conclusion coz of my own insecurities."
"We both did, but we averted a crisis and can move on now as long as you understand you're stuck with me, no matter what."
Abby settled her body into him, linking her arms around his back and burrowing her face in his neck. She was beyond relieved that he hadn't decided them being together was a mistake, but she also knew the anxiety that seemed to be hanging over both of them that the other could walk away, would take a little while to get over.
Gibbs smiled, resting his head against hers. "Sounds like a win to me, looks like you're gonna be stuck with me too."
"Good," Abby answered happily, her worry beginning to fade, "coz I'm not letting you get away, even told Kyle all about us...hope that's okay."
He figured she would've told her brother and although he wasn't sure how the young man would react, Gibbs took the fact that Abby was telling him as a good sign. He also knew she wasn't the best at keeping secrets and was glad she felt she could confide in Kyle.
"He said I looked the happiest he'd seen me, and I was pretty excited when I found him Gibbs..."
"I remember," he chuckled, kissing the top of her head.
The recollection of her turning up at his house with her brother after their first proper meeting was still fresh in his mind. It had been an important day for both Abby and Kyle, but it had also been a memorable day for Gibbs. Apart from seeing Abby happy and her finally being able to sleep, it was the moment he realized he had to put his heart on the line for her.
"Even Kyle can see you're more important to me than anything," Abby sighed, shifting higher up his legs so her mouth was just below his ear. "And you're mine."
She felt Gibbs shiver as her warm breath caressed his skin, her fingers scraping through the short hair at the back of his neck. "Speaking of which," she purred, "I owe you something."
Gibbs wriggled slightly underneath her, Abby's seductive tone of voice along with her insinuation and her nearness suddenly beginning to make his pants feel tighter.
"Oh yeah? What's that?" He grinned, the roughness of his voice doing nothing to hide his arousal.
She returned his smile before brushing her lips over his gently, then moved along his jaw and down the side of his neck with soft tender kisses.
Gibbs hissed when she bit into his skin, hoping the mark would be under collar level for when he went to work on Monday. But somehow he just couldn't make himself care, the warmth and moistness of her tongue as she licked over the branding meaning any thought he had originated from between his legs.
Despite how he thought the evening might end, with him passed out drunk on the floor of the basement, Abby had given him yet another reason to love her.
"You coming to bed?" She asked, getting to her feet and holding out a hand for him to take.
"You're not too tired?"
"Who said we were going to do anything other than sleep?" She teased.
Gibbs grinned at her and got to his feet. "If you wanna sleep while I'm rediscovering every inch of you, you're more than welcome to try."
Abby giggled and pulled him along behind her as they walked towards the stairs. "Something tells me sleep is gonna be the furthest thing from my mind tonight."
"Every night if I have anything to do with it," Gibbs said arrogantly, his hands easing around her stomach from behind as they hurried up the stairs.
They made love slowly and tenderly, reassuring one another with their actions and words that they wouldn't leave, reaffirming the emotional bond between them and strengthening their physical connection.
Gibbs remained true to his word, exploring every inch of Abby's body. His lips and hands wandered over her porcelain skin, cherishing every sound she made and memorizing each soft curve, leaving a trail of goose bumps in his wake.
She in turn worshipped the hard contours of his body, teasing him with her lips, tongue and fingers, tasting him and leaving him breathless until they both fell apart, trembling and clutching at each other, vowing to never let go.
When Abby finally fell asleep in the early hours of the morning, Gibbs' body surrounding and protecting her even in sleep, he couldn't help but think how just over a day ago he'd been standing outside of her apartment in the pouring rain believing he had nothing left to lose.
Abby had been the one to make him see that he had everything to gain.