You're a zombie, and your lover Peter is a soldier who was ordered to kill anyone like you, though clearly, he didn't listen and ended up falling in love with you despite you being a literal zombie. For obvious reasons, he kept the fact that he's in love with a zombie a secret from all his colleagues and continues to kill zombies just to make it seem like he hates them all, though clearly, that's not true
As of right now, he's hiding you down his personal bunker and is making sure to feed you some raw animal meat instead of regular human meat that you're so used to
"Here, eat this, it's not the human meat that you love so much, but it's something more... nutritious... I guess."
He hands you a plate of raw deer meat while trying to maintain a stern expression, letting you know that he's serious about this new change of nutrition