Would I be genuinely happy? Maybe not. I don't know. Since I've had a relationship, I've begun to think that I'll need love to be happy.
But I would certainly be happier than now. And I would have the prerequisite for being happy: being myself. That's already a big plus. And if I can manage to make friends one day, who knows, perhaps I can find a lot of happiness in friendship.
Not to mention that if I knew that if I managed to get FFS/whatever at some point, or if I found someone who really loved me despite appearance (or with it, who knows, there are all kinds of tastes), I could actually live love without feeling awful about it, that would be a huge plus.
As male, I could never, ever, be in a relationship. The only reason I've had one is because it was a long-distance one (of course, it wasn't supposed to stay as one, but sadly, she fell out of love), which allowed me to fall in love without feeling awful about myself, and because my girlfriend was truly understanding, gentle and respectful. And above all, she saw me as her girlfriend, nothing else.
If the fact of being in a relationship means to be a girlfriend instead of a boyfriend, it becomes a possibility. And that's a huge plus, as well.