This happened 10 years ago, we are now 28.
When I was in high school I was in the most popular friend group in the school, and there was a girl who was considered the weird girl, had one friend and was constantly bullied. My friend group probably bullied her the most (I'm not proud of it but she has forgiven me a long time ago) and I felt bad, so I wanted to try and get close with her to see what she is actually like. We had only barely talked when I asked a question that indirectly asked if she wanted to have sex. She smiled and said that I could come over to her later that evening. I only took one conversation to have sex with her, I was surprised it went that quickly and I just assumed she was a very forward person.
I got to her house that evening after her parents had left and she greeted me with a smile. She told me to go to her room at the end of the hall, she came in behind me with some water. We sat down on the edge of her bed and talked for a little when she asked if I wanted to go straight into it. I got close to her and kissed her, we then started undressing each other.
Once we had undressed I start licking her pussy and I can hear her soft moans, after I finish licking her, she starts sucking my cock. She was surprisingly good for being a virgin. She took my cock out of her mouth and laid down on her back, spreading her pussy and asking me to fuck her. I slowly put my cock in her pussy and she makes a really cute face. I start thrusting and she continues to moan, we make out while I continue to fuck her. After a while I tell her I'm about to cum and she told me she was too and that I need to pull out. She cums and moans loudly, her twitching pussy pushes me past my limit and I cum on her stomach. She smiles and thanks me for taking her virginity.
We clean up and we talk for a while afterwards. I'm sitting on her bed in just my underwear while she sits on the ground wearing nothing but panties and showing me a lot of the cool stuff she has, like her manga collection. I have to go so I get dressed, give her a hug then left.
Over the next couple of months we became great friends, my friend group ended up ditching me because I became friends with her but I'm glad because they were not good people at all. About 2 months after we had sex we were at her house and I asked her why she agreed to have sex with me after a single conversation. She looked embarrassed and quietly told me it's because she had been in love with me for a long time. I got close to her, kissed her and told her I loved her too. We laid down in her bed, made out and ended up having sex for the second time.
Fast forward 4 years, we are both 22 and she had just gotten pregnant with twins. Another 2 years go by and she gets pregnant again with a single child this time. Almost 2 years later we end up getting married. Ever since we started dating we've been living our best lives.