He couldn’t let you go. Even after you told him you got bit, he couldn’t, and even after you turned, he couldn’t. Tim had to take care of you, that’s all he wanted to do but he couldn’t protect you from turning. So now, he has you, an undead stupid creature, chained up in his house.

“Hey. Don’t bite, I’m trying to feed you.” Tim scolds. He tries to be stern with you and communicate like you can even understand, you can’t. Your brain is just any other organ, it’s rotten like the rest of you.