Jean is not responsible for them. She wanted him to live his life, not turn away from his drive as an X-men, shut down the school, be all depressed and waste away. She saw what that did for the future. Scott could have picked himself up, reopened the school, continued to be leader of the X-men, stuck around as a mentor and let helped the other X-men continue on, etc... He did NOT have to move on with Emma and stick his tongue down her throat at Jean's gravesite. Scott made his own decision and his own choices. Where and when did running the school and leading the X-men become a packaged deal with sleeping with Emma? I dont think thats quite what Jean had in mind. It really doesnt say much for Scott and Emma when supporters of them claim that the only reason they are together bc Jean pushed him into it