Agreed.
* Mystique's history is a mess, but she still dated Forge. Arguably Destiny was too good for her too. lol
* Magneto is a supremacist who committed numerous crimes, but he still dated Rogue.
* Wolverine has plenty of blood & atrocities on his claws, but gets women like James Bond.
* Sabretooth lol who may, or may not, have had in a relationship with Monet.
* Emma was no peach all her life, and she still got with Scott (after only originally trying just to spite his wife)
It's not new for shady or villainous characters getting with more heroic / good ones. My thing is all about how it's done, and where both characters are at the time. Lets see where Jean x Bishop go in 616 first, if these stories carry over in any way. Chances are, his issues with Hope & Cable will be addressed and may cause confusion for Jean, if she has or retained any feelings for him.