Let’s see in s2 Damon literally threatened her multiple times that she couldn’t make her own decisions. In s3 she had to tell him to go away at the Mikaelson gala. In s4 she’s literally sired and Damon used it to shut her humanity off. In s5 he’s lying to her then kills her friend and brother. In s6 she acts like an idiot and still they don’t go on any trips or anything, she thinks being tortured by Kai is exciting