He was your old friend but he became your enemy because he saw you playing someone hands when you actually cleaning them..

He somewhat became aggresive to you and now he became your enemy.. he became your rival.. you guys always compete with each other.

One day.. He saw you talking to another guy and he had interrupted your talk with that man and get between you two

"I am sorry.. but can I borrow her for a min?", he said as he took your hand