I've wondered if it has something to do with him being monogamous as well? I am not entirely sure where the idea came from Gale is "vanilla" when 1) the weave sex scene is incredibly wild where he essentially triple-teams the player character and 2) he even implies him and Mystra got up to some kinky stuff with her sounding him with weave, like... It doesn't seem factual at all and just a way to be mean to Gale when in a relationship with him.
Not to mention to mention that he seems to have a bit of a thing for danger in more than one respect: Doing bloody battle in a grim, dark cursed land at your side is what makes you proposition you, while forbidden, dangerous magic is also always a temptation. Excluding the brothel situation, I had thought someone had taken "still waters run deep" as a guideline for him, very nice and polite on the outside but once you start looking, there are layers.
I hadn't been at the brothel with him as a companion for a while because I had played his origin, but looking at it again now, you cannot even get out of the conversation with the Drow without being mean, bordering on cruel, to him. The option that on the surface seems to be the "nicest", the persuasion, leads to the worst outcome by far. And apart from being cruel to your partner, it also does not allow you to play your own character as kind or clueless and not interested in the whole thing yourself. If you are in the same situation with Astarion however you can be considerate of his feelings and are not forced to make fun of them instead. Apparently having body image issues is a thing to be mocked for now, thank you very much.
Also, yes, the tressym is a winged cat in form but as a character Tara is very much treated as a maternal friend, so I don't even see the issue. I think it's cute how during the epilogue kiss, Tara is pointedly not looking at the couple but cleaning her paw.
