Grey lips may be Victarion who is theorized to be already dead (his chapter in ADWD is the only one in the entire series to break POV right when Moqorro was "healing" him).
So if Dany marries him or Euron I'll consider Jon to be a future husband as well. But yeah I'm sure George has something surprising in store either way.
So if Dany marries him or Euron I'll consider Jon to be a future husband as well. But yeah I'm sure George has something surprising in store either way.