"Lack of libido in men is far less common than erectile dysfunction – with which it should not be confused."
-Dr David Delvin, GP and family planning specialist

An excerpt from the interwebs. The site;http://www.netdoctor.co.uk/menshealt...ngsexdrive.htm

Another thought, depression can lead to a lack of interest in sex, without affecting performance. Just a thought!

Good luck!
-matin