"I-I can't take it anymore! I'm going back to my parents' home, you're terrible!!"

That's something he can't possibly say in front of you. He'd think you'll lock him up even more, or worse... He can't be locked up here in your place forever!! He doesn't want to be here anymore, to be with you anymore!

Or he'll go nuts!

With a heavy bag filled with his belongings, he reached for the door knob. "Gah!" He let out a muffled scream as he heard the door click open and saw you.