When you get cheated on it destroys a piece of you. Your trying to take back control by instigating sex with another man. If you want to take it further make sure your both comfortable with the idea. Sounds like you have a great future with your partner so stick to fantasies. I went through a similar thing but we stayed together. We ended up trying mfm and we both enjoyed it. I basically had friends up every weekend for a while. Photo sharing is fun too. Obviously ask your partner first before sharing.
