I have been with my LTR for 22 years. She is the only women I have ever had sex with or even kiss for that matter. I got engaged to her 6 months after meeting her.

I feel that I could move on from her and have relationships with other women(which I know is a mindset I must have if I am to be a better man) however the idea of another man being with her absolutely kills me.

How do I get over the idea that if I divorced her I could stand her, the mother of my children sleeping with another man?