That's beautiful. I really like the imagery. I can feel how much he wants her and how confused he is about her leaving. It's really sad but also very, very pretty. Just a little glimpse into something, it begins and ends without saying too much and yet, somehow, saying everything. Good job.

I really like this, you convey the feelings so well. I could feel how much the first girl was hurting him and feeling helpless he turns to the second one.
Are there more chapters?

Call me dumb (no, you'd better not) but I really don't get it. Somehow, it appeals to me, though.

Well versed.

A few grammatical errors (you're should be your in the fourth paragraph, other things like that) and at the end, the 'you' that the boy is kissing suddenly turns into 'her', and the 'her' the boy desires turns into 'you' -- so, you jump pronouns.

But the message got across nevertheless, and it was beautifully written. Nice imagery with the slick sliding, and great perception through a boy's eyes. I say again, well versed.

This is so sad. I like the way you use sliding and slipping as this theme for both their movements that their emotions, it's very elegantly done. It really makes the reader wonder what happened between the two to cause this desire to hurt. Well done.