Three movies immediately come to mind, and all three are due to personal experiences happening during or near the time of watching that movie.
Marley and Me; my favorite dog growing up had started experiencing liver failure a month before watching this movie in theaters. First time I absolutely broke down in a public place.
Avengers Endgame; “We’re going to be ok. You can rest now.” That line broke me. As a father, always working hard to provide, something inside me snapped and I just couldn’t stop the tears.
The Art of Racing in the Rain; absolutely great storyline. I love the storyline. However we had just lost a close friend to a motorcycle accident a few months before. And of course dogs tug at the heartstrings harder than most on screen events. Was a very emotional night on the couch for the wife and I. At least I wasn’t in a theater.