[¯|_(ツ)_|¯]

Hey there,

It does seem pretty awkward or upsetting that he has a girlfriend already and you know that you won't experience something similar to that. It doesn't mean you're different, though, and just because you aren't straight, doesn't mean you'll never find someone you can be with! You will still be able to experience all of the wonderful things that come along with dating someone, it will just be with someone of the opposite gender. I personally don't think that relationships have to be that different depending on what sex you are dating. So you'd have to remind yourself that it can happen to you, too.

I think that he can still talk to you about what's going on if he needs some support or someone to vent to you. You'd just have to do the best you can, and if you ever aren't in the mood or aren't comfortable with the discussion, you can always say just that.