So I was in a relationship for about a year with a guy who I lost my viginity to and we broke up about 4 months ago and since him I've slept with 3 different guys. I feel guilty almost like I'm cheating on him but he's got another girlfriend and is clearly sleeping with her. So I don't know why I'm feeling like this. Before him I never wanted to have sex with anyone because I was so conscious of my body but now I feel like I've let myself go a bit too much. Opinions please ? Should I be having fun whilst I'm young ? I'm I being stupid ?