Poll Am I A Slut?

My husband says that I’m a slut, I say I’m not he said its only in my own mind I’m not. Here are the details we got married very young had a few affairs nothing serious so did he. About 15 years ago I met a man and was really attracted to him we hit it off and began a long term relationship. My husband found out and was crushed so much so that we moved to another state. My lover who was an illegal immigrant followed us he had no ties to anywhere and we continued our relationship. My husband and I were working at the same place and it was almost impossible to get away. The only way I could was to give him something to make him sleep so I could go out at night to see my lover and get laid. My husband found out I was giving him something to make him sleep because when I thought he was out I would say I love you and if I didn’t get a response I would leave. One night he wasn’t completely out and he remembered what I had said and he couldn’t respond so he figured out what was going on. I then stoped work and he still was so I had plenty of time to see my lover! My husband is a good hard working man and has always been good to me and the kids. I don’t know why I do what I do my husband says I have low self esteem and doing this makes me feel good, he also says I’m a sociopath. Am I a slut please respond thank you