I slept with freshman in my senior year of highschool
Why did you sleep with someone who is so much younger than you?
I didn't really think about that when I was doing it.
It can be difficult to think about age boundaries when you're in high school, but as a senior it's not appropriate for you to sleep with a freshman. As a senior, you are typically 18, whereas freshmen are brand new teenagers and much younger than you. Young teenagers aren't ready to have sex yet, and if you pressure them into something they're not ready for, they may suffer emotional damage.
There is nothing too fix. I don't think that I did anything wrong.
There is something wrong. It could be statutory rape depending on the state.