Gay folk: How do I cope/get over her?

A relationship needs two people who are willing to be together and commit time to it to work. So how can you still be hanging on an emotional strand to this girl who you "love." Don't you think it would be better if you just forget about her, and look for someone else? Why should you try to make a relationship to happen if she doesn't want to? To make your unstable relationship with her feel more stable then you guys should just stay as friends.