Sex File: What can we do in a sexless marriage after menopause?

"Although there is often an underlying explanation, such as illness or erectile dysfunction, sometimes people just lose interest in an activity that requires energy and enthusiasm at a point in life when they might feel a little lacking in both."

Pic: iStock

We're in our 60s, we are financially comfortable and have a very good social life, but after steadily losing her libido my wife unilaterally imposed a sex ban three years ago and refuses to talk about it. 

We are often kind, thoughtful and caring to one another, but is a complete lack of sex a reflection of a failed underlying relationship?