But Emma can get away with murder. Jean can't sneeze (and she'll sure be blamed for the end of their marriage already because she's the only one who is shown "cheating"). So, please, let it be Emma. :P
I hope Scott and Jean realise this whole Krakoa fever (and maybe resurrections?) is screwing up with their brains and they decide to reclaim themselves and their relationship. Like I said, I still think that, despite everything, Jean and Scott are perfect for each other. And they should be mature enough by now to fix their relationship and avoid those love polygons. I mean, seriously: their minds should be of people in their 40s. And for crying out loud, Jean should be over Logan already.
But if Marvel don't understand the treasure they have in their hands and they won't leave those two alone so they can finally be happy (with problems, sure, because no marriage is easy and they have very different personalities), then break them apart for good.
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Adding this because I just remembered about it (please, don't take it seriously):
"Find the most fearsome challenger in all of creation and make her your wife. Lie down at night beside your greatest threat. Make love to your fate" -- Apocalypse
Now that they're buddies, do you think Apocalypse would look at Scott and say: "Attaboy"?