I've read allot of these comments and most of them are virgin kids pretending to dick down their friends on the daily. But you. You seem like the genuine article my friend. Props to you. I lost my virginity back in 10th grade in high school to a scenario that started out like this. I didn't want to devote time or effort to build up a relationship just to experience what sex was like. I ended up having sex with a good friend of mine. Well it became a everytime we even remotely got a chance to have sex we did. Highschool foot ball games we would sneak out of the game (teachers watched the entrances and exits to make sure kids weren't just running off without their parents. It was a super fucking nanny state) and we would literally find a a bush to hide behind or between parked cars and would just go doggy style for a quicky. It got to a point though where we would start getting upset when we saw one another flirting with someone else. We basically started out as friends then had sex so much we became a couple and fell in love but kept trying to say we are just friends. Idk. It was confusing and the whole ordeal didn't end well for either of us. We don't even talk anymore. Haven't talked in 5 years. But in my mind she's the one that got away. I was selfish back then because I was this hot shot stud who was fucking the hottest girl in school basically on the daily and everyone knew it i was a good looking young man also so she would brag about it to her friends also but i let it go to my head and vise versa for her. We both started flirting with other people and the whole (simple casual sex) became something more. Needless to say I ruined the whole thing (she played some major roles in ruining everything as well so we share that blame)  but looking back now she was the one who got away but I wouldn't change a single thing. She's married now and has a few kids. She's presumably happy (I hope) and everything worked out for her in the end.