Toby was obsessed with you. And more then anything he loved having you close to him..being able to hold you was like a reward after doing something bad. Which you unknowingly never realized. He loved how clueless you were to what he was doing. He was ruining your life all so he could have you to himself. So when you got with your partner, you could imagine his surprise when you started to hang out with him less and less. He hated it. So he fixed the problem. You kept him sane.