Advice

What if your fiance who you have two kids with and been together for 6 years confess that he stepped out and cheated recently..he feels horrible wish it never happened. Afraid you will leave. Notice that what he did was the worst thing ever and he will never do it again..wants to move forward and communicate better. He feels he loves u more and etc...what would you do.. Or if u been through it how did you forgive. I prefer someone whose been through it because u can't say leave when u haven't experienced it. When you truly love someone its tough. No rude comments either. I never stepped out in my eyes I was close to perfect sex whenever clean house meals did whatever he asked..and more.. Advice please.