My boyfriend and I have been talking about me f****** him with a strap on. Now, we have not been together too long and we are not in a rut. I happily agreed though, I figure if that's what he wants then sure i'd be happy to give it to him. But we haven't even done that yet because i am away at college for a little while, and he is already talking about having a threesome with another man. And he is really excited for it. I am afraid that this is what leads people to discover that they are homosexual, and i really like this guy (maybe even love) and im terrified that he will leave me for a man but i still want to make him happy. What should I do? How do I handle this?