AITB for cutting my friend off for dating a 19 year old at 25?

LOL WUT. I just do not understand why so many people seem to think people with relatively-minor age differences are completely different species. No, I did not date or attempt to date any of them, but I had plenty in common with the 20ish-year-old interns at a previous job — more in fact than I did with co-workers my own age. Because I don’t like golf, don’t like to talk about my mortgage or my (non-existent) health problems, etc. And am up on contemporary music, culture, and the like. I had absolute tons more in common with the intern I was mentoring than the 40- and 50-year-old dudes sitting on either side of me. We basically had nothing to share at all except we were close to the same age. Nothing at all.

In this case it’s obviously just extreme jealousy that the dude chose not to date her. As is often — perhaps most often — the case.