I'm writing this question on shaky ground, as I've not read the comics in question (still looking for an opportune moment to step in and I don't want to be too spoiled), but I've reccently(ish) heard Spiderman made a deal with the devil to save his Aunt May, and sacrificed his child. I heard no one in the marvel universe could help Aunt May, which sounds bizarre.
The question I'd like to ask then is this; Did he really have to make a deal with the devil to save his Aunt?
EDIT: The story in question is "One More Day" by J. Michael Straczynski and Joe Quesada, published by Marvel Comics from November 2007 to January 2008. The Wikipedia entry summarizes the events, saying:
After his Aunt May has been shot, Spider-Man seeks help to save her life. He encounters the demon Mephisto, who offers to save her life if Spider-Man gives him his marriage. Spider-Man and his wife Mary Jane Watson agree, and this part of their history is erased so that, effectively, they have never been married. Additionally, the demon erases the world's collective memory of Spider-Man's secret identity, which had been exposed in Civil War #2. The storyline set the stage for a restructuring of the Spider-Man titles, resulting in the cancellation of Friendly Neighborhood Spider-Man and The Sensational Spider-Man, with Amazing Spider-Man revamped as a thrice-monthly publication.
The reality shift only affected the marriage between Peter Parker and Mary Jane. In the new reality, they lived together and were in a serious, committed relationship, but were never actually married. The events of "One More Day" were expanded upon in the 2010 storyline "One Moment In Time," published in Amazing Spider-Man, written by Joe Quesada with art by Paolo Rivera. This storyline showed what happened in the new timeline instead of the wedding, originally depicted in Amazing Spider-Man Annual #21 (1987). Essentially, Peter Parker missed the wedding due to superheroics, proving that they should stop the wedding due to their unstable lives.