And you left out the most important information.....you were still a child with a developing brain. Your capacity to give consent did not exist regardless of what your little head told you
Anyway, what does consent have to do with it. Consent, as I get the thinking, only applies to virginity. You can't tell when a boy becomes sexually active; more importantly, neither can he get pregnant!
I was racing power boats when I was fifteen, my capacity to make decisions, all kinds, was pretty well developed. No young, pretty teacher would be outside my still-developing mental capacity! Maybe I'm an exception, but I don't think so. I used to go to a lot of airplane soaring events. They give full-sized gliders to young men and women at age 14 to fly solo!
I rest my admittedly non-professional case.