I have a girlfriend, whom I love. So much. She knows that I watch porn, and doesn't care, at all. A few days ago, out of experimentation (and horniness) I went onto a reddit for people who exchange dirty snapchats. Here, I wound up striking up a conversation, and sexting with a total stranger. During, and after I felt guilty - I don't know if it's cheating or not, and I hope to God it isn't - but while I don't quite consider it cheating, it is close enough that I feel terrible. If the situation was reversed, I wouldn't mind and would know that my girlfriend still cared about me, but I don't know if she would feel the same if she found out. Even so, I'm too afraid to tell her. If I lost her out of a stupid mistaken experiment like this, I would never forgive myself. As it is, my guilt and acceptance vary wildly throughout the day, and I don't know whether it's okay to forgive myself. And even if it is, I don't know how to, exactly.