I had sex at a young age

OK I've had sex at a young age I was seven years old.
it was with someone my own age I wasn't molested or anything.

We met in school and we became fast easy friends.
kinda like when you meet someone and it's like you've always been friends, we just clicked.
She liked a lot of boy stuff, it was awesome.
a few months down the line
(with a ton of teasing from the other kids)
and we were staying over at each others houses, my parents thought it was cute that I had a little girlfriend.
Any way one night at my house we were playing video games and watching movies in my room (door open lol) and she kissed me, it was on the cheek but my corduroys got a little tighter, and I was like Uuuuuhhhh with this big grin on my face I just kinda stared and didn't know what to do, so without a second thought I reached down and readjusted myself which felt really good, so to make a long story short, we started touching we heard my mom coming stopped she told us it was time for bed ect. Then we started touching again then things started coming off and eventually we figured it out.
We were best friends/boyfriend and girlfriend for four years and we did it a lot lol. after which she had to move and I was upset for a long time.
It is one of the fondest memories of my young life.

PS.
Sorry so long.
And for the haters we were both happy it was very mutual and wasn't a bad thing.