I loved it! I sorta think you should write so ethic to accompany it, but that's just me.

This is too out of character for Remus, he is supposed to be loyal and responsible, yet he is almost perfectly okay with kissing a girl his best friend has liked for years. As well as the fact that Lily is talking about James wanting to kiss her, starts talking about Remus, then starts kissing him is a little too random. Also, what happens next? Remus says James is going to kill him, which he will, but nothing more happens. If this story was to exist at all, it should have been more than just a one-shot.