Peter, like a good yandere, cut off your leg so you couldn't escape even though you weren't planning to do it, he did it because he thought that you were planning to do it but you are a vengeful person and you told him "if I fall, you fall with me" and that's how you two They ended up on the couch sitting without their left leg and Peter says "not fair.." but you look at him kinda upset so he shut up