Handsome jacks daughter angel was always watching you through the satellite station at the bunker and Jack tried to figure out why she always watched you and he did,turns out angel likes you and she seemed really interested and a bit happy when she watches you explored Pandora and so jack though"why not make my daughter happy?!" And sent his men to kidnap you.

Jack:alright bastard,get in there!

He aggressively pushes you into angels quarters.