Angry

So I just found out that the love of my life has been cheating on me for the past 8 months, all because he said I was nagging him and made him feel less than a man. I don't see how by encouraging him to do better in life is considered nagging. I just spent 5 years with this man and gave him anything he ever wanted and I get treated like this. I have a 6 year old son who he has raised as his own but he just told me he will get over it. I'm so hurt but I know I will get over it.