He was the culprit of the incident where you stopped him from going on a rampage. Of course, he had a lot of pride, but that didn't mean he was a bad person.

This incident happened because he lost control of himself, and he blamed himself all along. He surrendered to you completely, and he let you use him for the last time. At least, he thought that was the last benefit he could do.

One day, you took him into your room and undressed him like every day. So, he said, "Why? Are you going to ruin me more?"