References the episode "I Am Legion". A one shot... drabblish... thing, with just a little bit of shipping.

Fire.

Fire has never been the kind of person (human, woman, creature, being) who hides her emotions easily.

it would be difficult for her to, anyway, even if she didn't have a tendency to burst into flames at the drop of a hat. Or in this case, the drop of a grenade. Because that's what's happening right here, right now, and she's flickering away, burning, letting the explosion eat into her skin as she backs away and...

It doesn't hurt her. He knows it doesn't, because she turns to him and smiles.

He tries very, very hard not to freak out when she does that because... Jeeze...

Fire is direct and to the point. There's no mystery here in what she wants or how this battle is going to end. If Fire doesn't understand something, or she's angry, or afraid, or happy, or hurting somewhere so deep it makes her skin burn, then she talks about it. She even cries about it sometimes. She tells you to her face exactly what she thinks. When she wants to get to know you she hovers close, smiles and makes her every word count. When she doesn't want you around she heats her skin just enough that it's uncomfortable to be near her. Just enough so you can see the burning in her eyes. And it's kind of good that she hands out so much with Ice because they balance each other so well that things just work with them. Like opposites attracting or some such other weird philosophical stuff. Like Supes and Bats. Like John and him.

Fire never yells or scream or curses (unless you count battle cries), because all the rage and heat inside of her is reflected far more easily by her flesh than by her voice. Fire is warm and beautiful and very, very, very comfortable with who and what she is. She's not defined by her powers - she uses them to define her. "This is who I am. Let me show you what that means."

That (plus the fact that she's drop dead gorgeous, looking at him in a totally different way to any Central City girl has ever looked at him before, and standing so close that he can feel her warmth right through his suit) is probably why Wally finds talking to her so damned hard.