As a lesbian woman, I'm already happy, that there are same sex relationships in most games nowaday. I mean - remember how we women only had Anomen (aka one of the worst companions ever) as a love interest in the old games?
I would be ok, if the sexuality of the companions would be addressed, but that is not a focus for me, since I'm as romantic as a stone. But it would make sense, if they have some preferred gender for example and maybe are surprised, that they find themselves attracted to a pc from the other gender - would give the characters some depth.
I mostly play romances to see, if they add storyline, so I often do all available romances - male and female - and then settle for my favorite one (which is Shadowheart in BG3).