Cheating

What would you do when you find out 14 years later that your husband was having an affair with your sister and many other women.He stopped after 14 years and blamed it on me as i was working shift work and said i was not a wife.I found out after we had our first boy.How could my own sister do such a horrible thing.There is a good part of me that hates them both but,Why is is i just can not walk away.He joined a church and tyhen became this saint and that was horrible as he stopped even going to movies.My life was hell and i wait for the day my youngest goes to school in LA as then i am going to decide what to do.
That is why i say.Do not stay with a cheater as it never leaves your heart.I wasted years of my life and i dont want to see any one else do the same.
The hurt never goes away and then there is anger.I remember back in 1991 we went to florida and he took video movies of the young girls on Daytona Beach.Why was i so immature and could not see through this guy?