Aside from the fact that I'm pretty sure they don't celebrate Christmas...

The main problems I had with this fic lied in execution.
Are you aware of the term, "Show don't tell"?
Well, you're telling as opposed to showing. Instead of telling us how Yuugi and the Pharaoh are feeling, SHOW us. Describe EXACTLY what emotions they are feeling at the moment; about the situation, about each other, ect. What you're doing is telling us events, as if you're trying to recap something.
For instance, when Yami no Yuugi decides to stay; you just have him tell Yuugi that well, he's decided to stay. The scene itself would have had more impact if you had described the emotions he felt at the moment that MADE him decided to stay in the first place. Having him just explain it to Yuugi doesn't really do a good job of capturing the emotions well.
When the characters are speaking, they sound flat to me. If you omitted their names, I would think the same character is talking. Keep in mind that each character has their own attitude as well as speech patterns. They use different words and express their feeling in different ways. In all honesty, all I see are two of the same characters speaking to each other. There's just no emotion in their, which is INCREDIBLY vital for a Romance/Friendship fic. Any fic really, but in a fic where feelings are heavily involved it's something that can't be over looked.
Now, about the technicalities...

There's not enough description, making a lot of one liners. The whole fic was just one line after the other. It doesn't really allow the reader to immerse themselves in the story.
This may seem nit picky, but one of the things I noticed are the way you use speech tags.
EX“Good times, Good times.” He said quietly.
It should look like this“Good times, (g)ood times,” he said quietly.
The 'H' in 'he' should be lowercase, as it is still apart of the sentence.
I say if you work on those things, you should improve just fine. Only if you're willing to, though.
Happy Writing.

Scarlet

sweet, Yami stayed with Yugi! Those kind of flashbacks make me all happy.

Lol with the expensive gifts :P now Yugi is 'really' a prince. n_n

IT'S A GREAT STORY

I REALLY LIKED IT

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That was so cute, I loved it!*gives WhiteAsukalove high five* That's just what I needed ti brighten my day.

I absolutely love the way this story went instead of Yami leaving he stayed with Yugi.. I hope that you had a Merry Christmas.