what does that have to do with Doireann?
well Grainne was a virgin until the PC came along and mentions somewhere in her dialogue she's head over hells for you (iirc at least) and the Harem Cats are completely yours and Evelyn fucking Cait isn't that much of a suprise because tbh that's to be expected of Cait to just open her legs for anyone who's willing
Ryn is also completely yours. She isn't banging anyone else without your say so.
You being a complete sub to Evelyn is her whole thing. She is the only person in the game with scenes for taking your virginities, for instance. Your character getting off on seeing Evelyn dom your lovers has always been there.
And for the dryads, you specifically show Grainne what the "seed bearing ritual" is so she could do it. Her then doing it with the only other dick int he place is an obvious conclusion.
And if it makes you feel better, the dryads have multiple paths of content coming. At least one has you corrupting and dedicking Orlaith, so there's choice of whatever you want to do.