>>83371843she was having an affair with some guy, as revenge for Peter nearly getting her killed through willful negligence, and she was helping that guy scheme Peter's downfall
then it turned out she was planning on backstabbing the guy at the least minute
but it also turned out the guy was just using her to get close to Peter, because he wanted to invite him to his gentleman's club of assassins
so she took a trip to Europe to figure out what the hell she actually wants
and when she came back about six months later ready to do anything to get Peter to take her back, she got beat up by Venom and told Peter had already gotten over her and married MJ
then she went crazy for a while, started dating Flash by day and spooking MJ by night
then Spider-Man needed a favor and she immediately came running to help and stopped harassing MJ
then Flash found out she's an ex-con and dumped her
then she got her life in gear, ran a detective agency, worked for Heroes for Hire for a bit, got some friends other than Peter, tried dating some other people but none of them were as good as Peter
then OMD wiped out all her character development and regressed to a backstabbing slut that doesn't love Spider-Man, just thinks he's hot, and has no idea what his secret identity is.
the actual reason is that Stan Lee heard Peter was marrying MJ in the news strip and decided it would be a good PR stunt if they he married her in the comic on the same day, and all the writers post OMD just want to ship Peter with their OC's
