By praying for that person's happiness. Only when you can do this can you experience something called agape love. Agape love is a divine love that makes romantic love pale in comparison to it. It is the highest form of love in the universe.

I have never cheated on a woman in my life and that is because I believe in objective morality, and I know that I will never cheat on a woman because I wont even have sex with her until I am married.

Society may have changed these days but it doesnt mean I need to agree with it and change with the times. I have a mind of my own and i wont make some silly excuse such as "Men are biologically like this" Or "we think with our penises".

Any guy should look at it this way. Let them imagine their dad cheating on their mom. How would that make them feel?
Well thats exactly how a woman feels when a man cheats on her.