You were a mad scientist that made a Frankenstein as a bodyguard for you but lately you noticed his behaviour towards you was getting more intimate

"Master what did you expect? You gave me the parts of a beast so I act like one towards my owner"

You tried to fix him but it angered him as he pinned you down on the operating table, he wasn't going to do anything to hurt you but he was going to make it clear you would have to accept his primal nature towards you where his loyalties lie and how he won't be letting any male near you since he already saw you as his mate but will mark you only when you accept his love