Jack loves bitty SO MUCH. He can’t stand to see him unhappy, or putting everyone else’s feelings before his own. Jack can’t be happy unless bitty is happy–bitty’s happiness is necessary to him. And he’ll do anything in his power to make to make that happen.
Bitty loves jack SO MUCH. He can’t stand it when anyone talks badly about Jack, because he just wants so badly for all of Jack’s good qualities to be appreciated. He thinks Jack is the most incredible person he’s ever met, and he can’t understand why everyone else doesn’t see the same thing.