I think your best bet would to either decline completely or get some of your other friends to come with you. Or, you could talk to her about it. You know, get her side of the situation and maybe you guys could work something out... perhaps she could break up with her boyfriend in necessary, but that would be a bit harsh to him...
For starters you should confront your boyfriend and ask if your suspicions are true. If so, you need to end the relationship. From there it is up to you to decide if you can handle being friends with them.
Yes you should and ask her why she wants to break up.
You say you like him.
take him out to do somthing he likes to do then when you get back and are all by your selfes for a sec kiss him he will LOVE IT!!!...:P (: :]
become his friend or move on and find somebody better
become mates
when she asks to go back to your place
I think you should make sure if he likes you and make sure he doesn't have a girlfriend. If he doesn't, ask him out or make it clear that you like him so he asks you out.
just try to get her to back away
First, decide whether you like him more than your boyfriend. Then, find out if he likes you back. Then decide if you are going to leave your boyfriend.
You should be pleasant to the guy that likes you - even if you don't like him back. Don't worry about it, just stick with your boyfriend!
He wants you back.