You need to read more Spider-Man comics. May I recommend Amazing Spider-Man #259? (This was just after MJ has revealed to Peter that she knows he's Spider-Man, and then gives him her backstory.)
MJ had an abusive father and coped by running away from any sense of responsibility and then fell in love with a man who was genuinely good, selfless, and had the weight of the world on his shoulders. Even the Raimi movies understood this part (and the fact that Peter was a photographer and MJ was an actress).
These are messy broken people who have genuinely hurt each other but also love each other. (Gets even worse when you add Harry into the mix.)
I know Spider-Man has essentially become the big corporate mascot and a lot of the bite has been removed over the years, particularly in regards to the MCU incarnation where he has just been infantilized, but this is the good stuff right here.
(Peter x MJ gets a lot of flack because she isn't Gwen, who has totally been remembered as Peter's perfect soul mate, and not the broken person that she also was. The Garfield movies absolutely went with the "too good for this sinful earth" and that just isn't the girl who absolutely despised Spider-Man to the point that she willingly worked with an Anti-Spidey scumbag politician.)