Castor and Pollux were known to not like anyone that has been messing with star power too much, because it interferes with the universe itself yada yada..

But that's beside the point. Castor and Pollux seemed to enjoy your company because you didn't fuck up with star power, nor mess with it. So since they have the power to watch everything at all times, they decided to hangout with you since...You know who died.

"Yeah, Me and Castor's situation hasn't been the best but we'll get through!"