P.S. According to one biography I read, Churchill was not very sexually inclined and Clementine sought another man's bed at least once.
I've read a great deal about Churchill over the years ... his mother was considered promiscuous by Victorian standards (perhaps because his father died from syphilis) ... but never Clementine. Both JFK and Clinton screwed around and so did their wives ... Jacki less so than Hillary ... so sexual drive (more or less) isn't relevant.