I think it's because BJ is insecure about DG's love for him. That may be why he's kinda neglecting DG's love, he doesn't want to be heartbroken again.
The human interactions are not suppose to be logic. It is a roller coaster full of emotions and demons. In which, makes it fun while screaming with anticipation.
(ノ≧∇≦)ノ
I think that is the best answer I have ever heard XD
Woah. That answer was...........deep.
Ok , so the reason BJ is trying to break DG's heart is because he unfortunately dated a son of a b*tch who cheated and dumped him . He had his heart broken so he's trying to break DG's heart too? I don't really think he's afraid to be cheated on or something, cause DG probably wouldn't even look at another guy in that way other than him.... Someone explain please!