You can put up all the scans you want. He's not married. Quesada told me so! :)
Also, he's not married, never happened, Mephisto ain't such a bad guy -- he has a cool color scheme, all red and black. It's not like M has ever done anything for any other Marvel character (Johnny Blaze) that ever came back to bite that person in the ass. It's not like Pete's worst enemy is on top of the world, or that super-villains in general are having a great time. No. Nothing like that has happened as a result of Parker's selfish bargain. Nope. Nothing like that.
But, still, if MJ approved, there wouldn't be anything wrong. It's not like there's a commandment against sharing.