This happened nearly a decade ago. This guy Jason (name changed) and I had been dating for a couple of months, before we realized we just weren’t right for each other and decided to just be friends. We had plenty of common friends so we hung out together quite often.
Shortly after our break up, he began dating the cousin of one of our mutual friends. This girl was loathed by our entire group because of how rude and annoying she was. But for Jason’s sake, we decided to tolerate her presence.
Let’s call her Cunt.
Cunt would often brag about how great their relationship was to our friends and would then turn to me and condescendingly say “don’t worry, I’m sure you’ll find someone”, even though I had made it clear that I like being single and that Jason and I are just friends.
However, a few months into Jason and Cunts relationship, one of our friends caught her at a nightclub, making out with another guy. We decided it would be best to tell Jason. We did and he thanked us for it.