RELATIONSHIPS!RELATIONSHIPS! RELATIONSHIPS! :( please help!?

I am a very hyper active girl at school. so there is this guy in my cl and we're pretty good friends and i liked him. its been a long time maybe like a year or sumthing and i never told him but bad luck he asked my friend out who knew i liked him since a long time and was actually helpin me getting up with him and i told her to say yes, dunno what i was thinking. And now their DATING :| .. and my friend is acting like she's the **** and trying to make me jealous which is very annoying and it is very awkward between me and the guy so i dont know what to do? i've been talkin less to him, kinda be far away from where he is or where him and his gf is. I dont know what to do? shouldi just ignore him that way?