Is it normal i had sex at age 14 with my first cousin?

Im a guy and was 14 at the time. I was over my cousin's house who was a 13 year old girl. We were alone and just hanging out. we were both teens and obviously as teens we were interested in sex. We were just lying on her bed and she moved right next to me and asked me if I'd like to jst mess around a bit. She said we were both teenagers and we both think about sex so what is the harm of just trying some things out. She is hot and I was all for it. So we started making out a bit. She took off all her clothes right in front of me and I was in awe. She was hot naked. She told me to take mine off too and I did. We were both naked and she gave me a blowjob. It was the greatest. The next week when I was over again she had a condom with her. She told me she was on the pill and if I use this we could have sex. At the time, it sounded great and we had sex. Doing it for the first time was an amazing experience and she was hot. I think it is normal even though she is my cosuin but I want other opinions.