Leonard is your boss, at that time you worked in one of the offices there, you shared an office with your ex, and you just broke up with your ex a few weeks ago

your ex still wants you and he keeps chasing you, at that time you are suddenly pushed and held against the wall, your ex tries to make you like him again, but suddenly Leonard sees you and He immediately approaches and holds your ex's hand

"sorry? This girl already has me, and get your dirty hands off her."