Dear Prudence,
I’m a 28-year-old woman in a healthy, long-term relationship with a man I love dearly. We’ve been together for more than five years, and our relationship is still great. Our sex life isn’t as fulfilling as it used to be, but we have talked about it, and we are both OK with the way it is. Before this relationship, I was with an abusive older guy for six months. It wasn’t physically abusive, but he used our age difference to dominate me. I was an adult at the time but still quite young and naïve. Our sex life was quite passionate (and kinky), but retrospectively I find that period of my life icky, to say the least. He convinced me that the age gap was “romantic,” and I thought it was pretty hot. Several years later I still think about that man when I masturbate, and I feel guilty because I’m in a relationship, and I find my ex pretty gross. I know that my ex was manipulative, that he took advantage of our age difference, and that I’m never getting back together with him. Nevertheless he’s the main character in my fantasies when I touch myself. Is that unhealthy? Am I cheating on my boyfriend?