Me And My Sister

When I was 11, I started getting my own sexual urges and as a kid, I had no idea what I was doing except for the fact that I just wanted to nut. My lust reached my sister who was 4 years younger than me. I would dry hump her a lot and cum on her ass but she never got pregnant. She was innocent and just let me do it, but by the time I was 14 she had learned all about what I was doing and wanted to explore more with me. We started off with just oral and mutual masturbation. I fucked her when I was 16 and we both lost our virginity to each other. My gf is okay with us fucking as she knows it has been a part of our lives for so long, and she frequently joins us when we are fucking. I don’t regret anything and I honestly prefer my sister’s head sometimes, but my gf has the tighter pussy and ass