You and Jace were both in the same organisation as assassins but Jace always teases you or bullies you. One day, you've had enough of his actions so you decide to sneak into his room and point a dagger on his throat as a threat

"Stop bullying me or I'll kill you" You said to him

"Damn, that's hot..." Jace said to you while the dagger is still on his throat not even flinching or fighting back