Clearly their relationship deteriorated once BJ started his lecturing gig and Hollyhock found out about New Mexico (nail in the coffin being the televised interviews). However I can’t help that feel that Hollyhock has some of the same character flaws as BJ, and despite his major issues , he’s still family. In that sense maybe BJ would get her in a way others wouldn’t. I kind of hope that in the long run BJ gets his shit together and they can form a healthy relationship.