I stumbled on a couple of old Spider-Man newspaper collections online and as much as people love to dump on Wolfman for having MJ reject Peter's first proposal...turns out Stan had her turn down several marriage proposals at various intervals in the strip's history.
One was before she found out Peter was Spider-Man, she thought Peter was too broke to afford marriage and they'd end up quarrelling over money, she loved him too much to ever consider having an argument with him, so she turned him down. She's shown to be pretty much broken up about it too.
Peter reveals his identity to her a few years later during an arc where her uncle Judge Spencer was kidnapped, but, like in the main comics, MJ isn't so sure she can handle Peter's other life. Despite turning down another proposal, the two do get back together eventually, MJ says Peter will always be a hero to her, but she wants a husband, not a legend.
WEB#90: An illusion by Mysterio has Peter rescue a fake Mary Jane. After defeating the villain Peter returns home to the real MJ giving her a kiss and saying that was for being the girl of his dreams... and for being real!
Nowadays, modern Marvel would totally do a Galactus-sized symbiote for real
SM #24: Peter wakes from a nightmare about some of his foes and decides to go web slinging to clear his head, leaving a note for Mary Jane so she doesn't worry. He wonders if he's Peter Parker or his alter-ego, given how often his costumed identity creeps into his personal life!
I really want the Spider-Marriage to be restored once and for all. Marvel is getting stupid with this whole thing of "Peter's life can keep forward because readers won't identify with him anymore". That's just stupid! We already have a young Spider-Man with Miles Morales, and living a life that goes nowhere is not worthy of living it.
It is, unless you account for an "official reading order" of all the titles!
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SM #26: The Parkers enjoy an afternoon walk when a purse snatcher bolts by using a strange device. Peter pursues but fails to catch him and later tells MJ how it reminds him of how he failed to stop the man who killed Uncle Ben. MJ encourages Peter to tell her all about it...
After retelling his origin, Peter distresses over losing Ben, MJ reminds Peter of how it changed him for the better. Also, while he has a responsibility as Spider-Man to help others, he also has a responsibility to himself as Peter to MJ as his wife! Later, as Peter plans a web sling to clear his head, MJ remarks he shouldn't stay out too long as she has plans of her own for them that evening! Peter thinks how lucky he is to have a loving and understanding wife, and to think of that next time he feels sorry for himself!