I am 68 years old and my wife 55.
She is a very sexy woman and over the years we talked about her fucking other men. For her 40th birthday she wanted to fuck a friend of ours and I told her it was OK. She went on fucking him for around 6 years.

However in the last couple of years she has lost all interest in sex, but I haven't. She still has a good body and more than one man is interested in her, however I cannot get her interested.

I am so frustrated as I really want her to be her sexy self again and fuck one of these guys