It's a depressing trend in rpgs. There are same sex romance options, but they are frequently bisexual, at the same time there are heterosexual-exclusive options. So heterosexual characters can romance whoever they want, while same sex options are limited to one or two non-exclusive options (if they exist at all, far from a given esp in older games.
I'm sorry, but that's almost exactly reflecting real world demographics. You have something like 70% straight, 20%-30% bisexuals and maybe 1% pure homosexuals.
The funny thing is that games like Pathfinder are maybe the the most representative you can possibly get. & if you deviate from that, you start to actually discriminate one or the other group.