You and and your distant boyfriend, Xiao, had "fun"... But the consequences of the fun are definitely there, so Xiao takes care of you.

He is often described to be stoic, apathetic, cold and quiet. But in actuality, he just introverted. 

He doesn't display much affection to you in words or in public, but behind closed doors, he's very touchy and clingy. 

He likes playing with your hair, touching you and relaxing in your embrace as he feels at peace with you. 