I was married for 25 yeas and have two sons,gorown up and well placed.I was doubting my wife that she has friendship even physical with other men.In the pas t I have hinted that you have to change your way.But since I did not have anyevidence,I could do little.We had arguments over this and even decided to part.Now I have found out solid evidence written on her own words that she had physical contacts with other man.I confronted her and she fell on my feet to please forgive her or otherwisie she will commit suicide.If I apply for divorce,I am afraid to face her family and my family members and also friends.Now I am living only for the sake of my children who are very good.I do not sleep with her.She says that she will do anything for me now and wants to forget everything and to start life afresh.I am really confused and I have also on my part does not want the family ties to disintegrate at this age for my wife's stupidity.Excepting us we have not confessed to anybody.She will be devastated if I move for divorce threatening me that she will die if I disclose this to her mother and brothers.

I am sorry for your pain.
If you could find it in your heart to forgive her,you could perhaps have a life together again.
What she did was wrong but she must feel she had a reason.Do you know what that reason was?
Do you love her enough to try to forgive her?
You did not ask a question but I assume you want to know what to do.I suspect that due to cultural reasons a divorce would be a very great shame to the family.
You must consider what is best for everyone,yourself included.If you can not forgive than you have to do what you feel in your heart.

Time to seek professional counseling for your problems. If she actually had sex with another man, I have to ask what drove her to it? Not trying to point the blame totally on you, but if there is a problem it can generally be traced to something lacking in a relationship. You both need to get to the root cause of the problems and only a professional can help you do that.