My wife and I have been married for 20 years. We are both 46 years old and our children are almost teenagers. She is a very beautiful woman, and as she ages, her genetic gifts become more apparent - she becomes even more charming and attractive. She is an excellent mother and we have always been best friends. We love each other very much.

For the first 16 or 17 years of our marriage, our sex life was very pleasant. My sexual desire was always very strong, while hers was rather mediocre during that period. We would try out some new things from time to time. She was really never reserved. It was so fortunate to be married to a woman I deeply loved and who was both beautiful and intelligent.

About three or four years ago (when she was 42 or 43), I noticed that she became very sexually active. She started craving more sex. She began to talk to me very explicitly. We even started sending each other pornographic text messages. She asked for doggy style sex (which she had never tried before), and then asked me to spank her while we were having sex. Before, she was too shy to masturbate in front of me, but now she is completely obsessed with it and even likes it when I masturbate in front of her. She almost has a fetish for my semen (which is quite interesting). Now she has a vibrator and a dildo, and we use them in the bedroom (her idea). Now she likes to simulate MMF sex in the bedroom with me and her dildo. When we go on dates, she does things that excite me in public places - like rubbing my penis under the table - which was unimaginable four or five years ago. She also seems to like wearing revealing clothes on dates.

This is really interesting because my sex drive has always been high and it's getting stronger. But her behavior sometimes really surprises me. I admit that her use of a dildo to simulate MMF sex did shock me a bit, but it was really interesting. Some of the things she said to me during the process were just so vivid.

I have asked her many times why her sexual desire suddenly became so strong. She just smiled and asked, "Don't you like it?" She said that it's not uncommon for women in their forties to reach their sexual peak.