When I went to my 10 year high school reunion, one of the former cheer leaders arrived with her husband. He had been one of the football coaches and they had been married for 9 years. No one really thought much about it because when we had been in school, he had just started teaching so there wasn't that big of an age difference. The last I heard, they were still married.
On the other hand, I have a cousin who used to babysit, the football coach's kids. He ended up getting a divorce and marrying her. They divorced after about 8 years.
What is it with football coaches and cheerleaders?
I also know of a music/band teacher who met his partner when the boy was in middle school. They started dating after graduation and have been together for over 30 years.