The very short version... my wife carried on a sexual/romantic affair for nearly four years, with our ......'s soccer coach. I fucking hated the guy, "Coach Webb," or "Webb" as I called him. Arrogant, self-centered, bullshit artist. That said, all the moms (and some of the team members) found Webb irresistible.
KK's thing with him started during a long tournament weekend, an "away" event. She came home late on a Sunday after that trip, exhausted, with a UTI... I was suspicious, but I didn't confront her. From then on it was a Webb "fuck-fest" - until all the wheels came off. It was a mess, turns out not only was Webb fucking my wife, he was fucking my ...... (she was legal age), and her BFF, Emily (also legal, and worse, I was also fucking her). I don't want to derail
@JRodgers teasing thread, and our stories are pretty different - save for the "coach aspect."
It seems to be a pretty common suburban mom thing; affairs with coaches, trainers, physical therapists, "life coaches..."