I remember my sophomore and junior years in high school, and a teacher I had who was in her late 20's taught English and journalism. Needless to say, I had a little crush on her. Thankfully it didn't go far.
Then in my senior year I remember a keg and key party at a friend's house, and I saw one of my best friends, who was 17, making out with our English teacher, who was only 24 at the time - and I mean seriously in full view in front of everyone! Thankfully it was the end of the school year!