why do some girls have a magnetic affect

I am a happly married man with 2 children, an attarctive wife, our sex life is generally good…but of late with the onset of the menopause things have slowed a little…mainly at weekends and once in the week. I have resorted to looking at internet stuff that is legal!! and have sex without my wife. I work in an environment that is mainly female and find that once in a while I meet a girl who is like a magnet to me and I cannot resist her…but she might resist me!!. THis has happened 6 month ago.met this girl..we went out for an engineered lunch and I really enjoyed the chat..then I did not see her until this christmas and wow me got drunk and it ended up holding her hand asking her out…she said you are married, so NO. But due to various reasons I have been out with her and cannot get her out of my mind. Basically she is like my wife except she is 24 and my with 48..me 50 . Its like a drug. Why am I so stupid..when it comes to the opposite sex..ps my wife says that I have a bit of a sex addiction / drink addiction