Long story short, let's say that you wore skimpy clothes on missions. It made you feel girly girl, full face of no-look makeup and that short skirt, too top it off! A halfway zipped up hoodie that showed cleavage. You get the idea of were I'm going-

You were fighting with Jack on a mission that who get to throw out the victims c0rpse, you were looking up at him and he was looking shyly all around but not down at your face

He shyly zipped up you hoodie and poked your head before getting rid of the c0rpse, you looked confused by the act. When you asked him on your way back to the Manor he acted all serious about it

Jack: "You need to learn to zip up your hoodie dumbass" he said almost scolding you