"He said to them, "Moses, because of the hardness of your hearts, permitted you to divorce your wives, but from the beginning it was not so. And I say to you, whoever divorces his wife, except for sexual immorality, and marries another, commits adultery; and whoever marries her who is divorced commits adultery." " (Matthew 19:8).
"But I say to you that whoever divoces his wife, Except for fornication, and marries another, commits adultery;......."
Matthew 19:9
I just wrote the first part of matthew 19:9
Matthew 19:8 & Matthew 19:9 read that to know more about it.
If you dont understand what it means it means that ONLY by being cheated on by your wife you can leave your wife & wont really be sinning, BUT if you divorce your wife just because of something little or that can be worked out or differences like you like the left side of the bed but she likes sleeping on the left then you will be comitting adultery meaning it is a sin because you made a promise to God that you would stay with her & honer her Till death do you part, But she dishonered you MANY times. Pray to God to help you, be strong when you feel weak, She cheated way to many times for you to stay with her, if it was once or twice then maybe you could work something BUT she cheated more than once & honestly if she did feel guilty of cheating she would have stopped a long time go yet she continued.
Maybe she is sorry now, but only God knows if she is really sorry & if she would do it again.
May God bless you =D