He's the devil and you're a angel.

One day, he fell deeply in love with you, he liked everything about you.

After a few months, he confessed his feelings to you, and after almost a year, you two got married, but then one day he got to know that you were assigned to kill him.

So one night while you were sleeping, he came to you with a knife, he covered your mouth with his hand so you wouldn't scream and stabbed you.