I used to believe that you got married right after you finished high school or college.
A childhood belief about marriage

others believed things like this
- I thought that wars had to last four years... just like high school and college.— A. Falk
- i used to believe that everyone got married the day they graduated from collegeAnon
- I thought all teachers in school were married to each otherAnon
- When I was young, I honestly believed that I would die before I reached high school. Anon
- Until I was in High School, I really thought that the "underground railroad" was under the ground.— S
- Until junior high school, I thought Monty Python was a wrestler.— Jamie