The undertaker had manipulated you after secretly killing your past lover. He wanted you for himself. He tricked you by coming to your side and taking you in when your lover was murdered. You didn't know he was the one to take his life. When you finally found out, you fell to your knees your head down, your trembling.

Undertaker: "you believed everything I said..lapped it all up like an eager puppy." he walks over to you, stroking your head/hair "That's a good boy..."