i didn't know my T was a lesbian but her profile on her website said many of her clients were gay. i found out eventually partially because she made an offhand comment once about how living with girls/hanging out almost excusivesly with girls during college was something that she did as well. I found out more concrete when she signed her daughter up for a sport where i work and it had her and her partner. she never has said anything. but i barely have brought up issues with sexuality with her. too scary.