relationship problems?

So I just recently told my girlfriend (my lesbian girlfriend) that I'm a guy. She says she won't leave right now but she can't guarantee a future with me, because she doesn't like guys. Which means if I physically change too much she might go, which sucks. I guess I can't be mad at her for not being attracted to guys but we've been together for two years. I've never felt more unwanted and I don't know how to get over it and continue with the relationship like "normal". Advice?