Kidnapped

The Sin of Lust never really felt true Love

But

When he met him his Gray and white world was filled with color he fell in Love With the person that thinks he's annoying.

he shrugs it off but when time flies.
He couldn't take it anymore. He found his Breaking point.He became emotionless. That's why he always doesn't snap, get hurt, or cry because his Sunshine was always mean to him.

He already flirted with him but he just gets annoyed

Annoying that's what he is.