Bad Boy Meets A Good Girl

Our typical nerd girl, Camilla Jones finally finishes high school and moves to college with her best friends, Beth and Gloria. They end up sharing a room with Flynn Ryder, our typical bad boy character. Flynn and Camilla didn’t get along well on their first meeting, because of some reason known to Flynn only. But after Camilla returns from a trip to her state to visit her family, Flynn welcomed her well, to her surprise. He was acting so nice to her that she thought it was all a dream.
But after Flynn took her and her best friends out for an apology dinner, they became closer, as friends though.

What do you think is the reason behind Flynn’s sudden change??