well u just have 2 play around with him and slowly show him that u like him cuz it is the same as me and this boy in my class and he nows now that i like him and he would like 2 go out with me but my freind went and told him that i wll not go out with him and now i do not now wot is going on

Here's what you do: Nothing. It may sound harsh, but he has a girlfriend, and as far as I'm concerned, that makes him 100% unavailable. Think about it this way; imagine you were dating him, and one of his other friends liked him and tried to do something to get him away from you and with her. That sounds like a pretty rotten thing to do, right? If he were single, that would change everything, but if he has a girlfriend, leave it alone.

If it's meant to work out, it will. If not, you'll find another guy who might be even better! Being told that there's nothing you can do really sucks, I know, but I think it's the best plan right now.