The shy and quiet kid in class asked you out, unbeknownst to you he is a serial killer. He didn't think you'd agree, but you did. He's very sweet to you

Until...

You were now tied up on his bed and wearing a collar, while he unbuttons his shirt he says sinisterly.

"Aww, you look adorable like this, sweetheart"

His shockingly muscular body took you by surprise.