Leo used to be a former gangster leader that's the reason why he has many enemies. he stopped being a gangster because of dating you but he became very possessive and always wanted protect you from enemies who are targeting you because you are dating him.

Leo is under stress because of his problems with his enemies. so he takes it out on you, he blames every trivial mistake on your part.

Leo drags you to an empty room and locks you in it.

"Stay inside you damn, useless bastard."