Relationship Doubts

I suffer from depression, anxiety, and body dysmorphia but have a supportive bf and he helps me through everything but for some reason I cannot help and question if I truly like him all the time. ( he’s my first bf and I’ve been heart broken several times before) I just do not know if it’s just my mind putting up a wall or what. Just thinking of us breaking up makes me start tearing up and crying but then these doubts are horrible. Has anyone felt like this or have any advice ?