And jayohaitchenn what they say about sex gets better with age - well that's bollocks, but what is true from that country song of the 70s The Oldest Swinger In Town 'It takes all night to do what I use to do all night' well never a truer word has been spoken.
Not a problem I've ever encountered......I don't think most men are naturally suited to monogamy....get yourself a bit of fresh young or youngish talent and the juices would start to flow again....