well, for starters, welcome to psychcentral! i hope you will like it here, and find the support and caring that you need!
wow, this has to be really hard to deal with. of course you care about him, and probably do want to be with him, right? but i take it you are in no way interested in being in a lesbian relationship. that's pretty complicated stuff to navigate.
i'm wracking my brain trying to think of something helpful to say, but i just don't have anything to say that will help! i think this is one of those situations where you just have to let your own heart and conscious decide what is important and right for you, ya know?
i'm so sorry you're faced with this. i wouldn't want to be in your shoes. ((((hugs)))) <-- only if you want hugs
Angela