I've been googling for awhile, and its amazingly difficult to find. So many cartoons clogging the infonet! I remember some of the story, Spider-man was collapsed due to an attack by Morbius, the team was the original X-men and Xavier. At the end of the book Spiderman insists on expressing his gratitude, leaps over the boy X-men (who protest), pulls up the bottom of his mask and smooches Jean. He leaps away, while the boys grumble and Jean giggles.
I believe it was while Peter was at ESU and the art was good, either Romita senior or Byrne.