Stay away from Gale. The mechanics of romancing him are more toxic than the character themself. There is no indication of when he locks you out of other options. It’s like playing “Set a Boundary Simulator”. Least fulfilling romance imo. What a fucking weirdo.

Definitely go full in, “I can fix him” with Astarion.

Talking from many patches ago fwiw, maybe some of the mechanics were fixed.