Fans have come to recognize Spider-Man and Mary Jane as one of the Marvel Universe’s most turbulent relationships. Sometimes, the characters seem destined for each other. On other occasions, writers present them as so diametrically opposed that readers are left pondering how they ever got together in the first place. Even something as seemingly definitive as their marriage in 1987 hasn’t proven enough to bind the couple together. Writers continuously find new and brutal ways to tear Peter and Mary Jane apart. For many fans, this has left an overwhelming question: just why do Spider-Man and Mary Jane keep breaking up?
Source：https://www.cbr.com/why-do-spider-man-and-mary-jane-keep-breaking-up/
