In a recent interview with Near Mint Condition published a few days ago, Claremont stated:
Clip of quote above: https://mobile.twitter.com/Jean_RED_...00959035412482She passionately loves Scott, he passionately loves [Mariko], but [in] 150 years at the absolute max, both...Mariko and Scott are dead...Logan and Jean go on forever. They are core elements in the nature of the omniverse.”
Full interview: