I have this vague recollection of Monica testifying that they did have regular sex. Bill kept denying that but he had something to gain: so long as all the sex was oral then, by his definition, it "wasn't sex" so he didn't "lie under oath" and thereby didn't do anything wrong. 
JFK shared Marilyn Monroe with his brother and no one said a word. Clinton gets in trouble for dillying with a "portly pepperpot." My have times have changed.
even George Carlin, before he croaked natcherly, chimed in on this one. JFK aimed high and banged MM, Marlene Dietrich, Angie Dickinson, Gene Tierney, and others. But he also is said to have banged a WH intern, along with more than a couple of secretaries. In short, JFK couldn't keep his dick in his pants.
Slick Willie, OTOH, was impeached (but not convicted) for lying about his having banged a WH intern. Gennifer Flowers, a no-name model and actress, Paula Jones (an Arkansas state employee), and Kathleen Willey, another WH intern/aide were all "conquests" of his.
Slick definitely didn't have any standards.