My girlfriend has cheated on me through webcam, I dont know if i can trust her again..?

Well, let's be clear that there is a huge difference between flirting with a random stranger over Facebook Video Chat Rounds (a href="http://apps.facebook.com/chatrounds/" rel="nofollow"http://apps.facebook.com/chatrounds//a ) and flirting with a random stranger in person. Both are done for kicks and perhaps to boost one's own self-image, but one has the benefit of being anonymous and fleeting and the other has the potential to lead to something further. I think if you care about her, you need to listen to what she's telling you and BELIEVE her, otherwise your fears will ultimately ruin this relationship. If she's never given you any reason to doubt that she loves you other than this one slip-up (which took place over webcam), then I think she deserves a second chance. (Especially if the guy she was talking to was a stranger -- if it was an ex-boyfriend who lives nearby, then it is a bit of a different story) You have to think about her motivations for doing it -- to me, the fact that she was lonely and feeling a bit insecure in her long distance relationship, perhaps, are pretty understandable motivations. A relationship is only worth the trust it is built on. If you don't feel ready to grant her that trust, then maybe it's time for you to move on.