They were never meant to come onto the player that strong right off the bat.
Vincke said:
So… it was a bug.
The approval thresholds were too low when we shipped.
That’s why they were so horny in the beginning.
It wasn’t supposed to be that way.
We’ve fixed it since, at least for some of them.
We’re still fixing a few of them.
Vincke also said that the companions thirst for romance, wasn’t intended… especially Gale.
But it was too fast.
It was supposed to simulate how real relationships are."
I can at least confirm that Astarion doesnt seem to be bugged based on my playtime thus far.
Either that, or he really doesnt like me.