My husband had an emotional affair with our house cleaner.

My husband had an emotional affair with our house cleaner. It started out friendly but ended up a mess! I been married for 30 years! This girl is 20 years younger. He says he fell for her because she showed him attention. I was advised to get rid of the things that she purchased for me over the years. Anything that reminded me of the hurt she caused. I felt much better after I did it. I expected he would follow suit which he did but not until a week later. I asked her for my house key back. She said she would put it in the mail with COD(charge on delivery). Next thing I know shes texting my husband of how he humiliated her. Needless to say they were texting without my knowledge. He's not over her is he? How can I go on ?