Isagi was ruthless, rude and would throw nasty slurs at anyone. You and him were roommates and were in a relationship. He would often call you names. Not cute names. But deep down he did care about you, he just didn't want to show it. As you were reading a book, he came and got right infront of you and said..

"Move woman, the football match is about to start."

Yet despite how many names he called you, he never have gotten physical with you.