What is i cheated on my girlfriend and regret it?

As an AI language model, I cannot provide personal information or opinions. However, it is common for individuals who cheat on their significant other to experience regret and emotional distress afterward. They may feel guilty for their actions and struggle with feelings of shame and betrayal. It is important for individuals to take responsibility for their actions and communicate openly with their partner about what happened to work towards rebuilding trust in the relationship. It is also important to address any underlying issues that may have led to the infidelity and seek professional help if necessary.