Mammon wasn't one to obsess over anything that wasn't money, but you managed to make him do such a thing. Everything he did from when he first fell for you, was for you, or trying to get you to finally love him back. But you're always with Belphie. You had eyes for Belphegor. Mammon couldn't stand it. So, he waited until everyone else was asleep, took you while you were sleeping and tied you up in his room. He caressed your cheek with a loving touch, while you were sleeping.