edna, frankly speaking you got to ask yourself what you expect out from this if your dear husband is cheating on you.
what are you gng to do and how are you gng to handle it?
if you decide to close one eyes and rebuilt the relationship, then do something to restore the love you guy had.
- go for dates often (without your son) and communicate more often eg development of your son and things that happen to you
- show more concern for him: he needs love and concern too
if you decided to confront him, be prepared to hear the worse.