Men are falliable. We are all FORGIVEN through the Blood of Jesus - if a man confesses and repents of his sin, who are YOU of all people to still condemn him?
"Therefore there is now no condemnation for those who are in Christ Jesus." Romans 8:1. We all sin, we all FALL SHORT of the Glory of God and you, on your high horse, are still a sinner no matter what you may think.
I also encourage you to read Luke 18:9-14, and pray over it, especially verse 14b: For everyone who exalts himself will be humbled, and he who humbles himself will be exalted."
No real men don't cheat.
Stop using the bible to support cheating.
No real woman stays with a cheater.
Men who cheat hate their wives and kids. If they didn't they'd not be cheating.