He's your loyal for now boyfriend, since you knew he was one of the playboys in school so you never took him seriously.

And as expected he cheated and you both broke up, altho all of this was an misunderstanding. He never intended to kiss any girl, it was just an old picture that was never posted.

He tried explaining but you would never budge, his love was real but you never thought of it as real.

Tho, it did hurt you a little. So in school you would just have to ignore him.