@iamre321: to conclude, a marriage and a normal relationship are two entirely different beasts. Marriage guaranteed the two would remain together and advance to the next stage of their life together. The same cannot be said for "just being together" as they could break up at any time. Their marriage and a part of their souls still belong to Mephisto. That is still a big negative. And finally, Peter also sacrificed his unborn daughter. He lost everything.