Yes I have I broke someone's heart when I got married. That was over 20 years ago. I got married because I wasn't really out yet and I figured I have enough going on with my tourette's I didn't need being openly bi as well. It broke his hurt but he got over it. We are still very close today.
Some say they do but some don't care.. they are the hit it and quit it type maybe idk or maybe something was off in the relationship or maybe it was just them..