I had a bad experience, with some nasty high-school girls.
In high school, during lunchtime, I consorted with a group of 4 girls and 1 guy, but only because I suspected that I had to (back then, I cared about "fitting in"). To maintain the quintet's anonymity, I'll denote their names by the letters: A, B, C, D, and E.
Person A was shy, geeky, and nice (and possibly an Aspien); B wasn't too bad but did try to "fit in;" C and D were gossip monsters. E was A's boyfriend; he was a geeky, funny, nice guy. He never said anything against any of us.
Up to six of us would sit on nearby benches. A and E wanted to sit together, so they could drape their arms over each other's shoulders and occasionally hug. They were cute!
I've always been single, but I was happy for them. Occasionally, there was no space for them to sit beside other, unfortunately.
Sometimes, A and E would: stand, join hands, and leave, moving to a quieter place; perhaps, they wished to pursue intimate conversations. Our group setting, in a crowded hall, was a farrago of chitchat and superficiality, so I understood why they wanted a quieter (and more personal) place.
As soon as the pair would leave, C and D would gawk at each other, blabbering about how, "He's taking her away from us! He has no right to do that! Why can't they just be with us, all the time! It's so respectful!"
This carping worsened, as the year progressed. C and D began to gossip about how they resented every little smile A and E would give each other. B joined in, describing A's and E's harmless affection and elopements as affronts to the group. No rendezvous ever offended me. Why can't they go where they're happiest? Human volition. I wanted the best for them.
B, C, and D reaped many opportunities to scorn the couple, after they had eloped. I'm pretty sure that all three scorners were single. Was it resultant jealousy? Maybe. Was it overblown, unnecessary hatred? Absolutely! I can't believe how far they went, in framing these two kind souls as callous traitors.