When I was in college, I had a crush on my History teacher. Best history teacher I ever had, he was probably only about 6 years older than me. It was just a crush, and nothing ever became of it, besides his class was easy.
However, one of my old high school English teachers who is married to old science teacher, well she cheated on her husband with a Junior in high school. Talk about horrible, she was that type of person though.