Well, I recently re-read in the Stan Lee Meets Spider-man book the classic issue (to me) where basically Peter has the flu and is delirious, admits to being Spider-man in front of Gwen, Harry MJ, and Capt Stacy Mj says some mean things to Gwen about it Gwen is horrified.
Anyway, he has the Prowler repay a favor by dressing up as Spider-man, yell at Peter in front of everyone, and has the Prowler as Spidey admit that him and Spidey have a special deal for Pete tpo get photos. Interesting to because, due to retcons, MJ knew all along, and Capt. Stacy would reveal he knew a couple of issues later in his death, so i guess he didn't buy the explanation (though his thought balloons suggested he did)
