Well... what do you define as enough of a behavior to fit a pattern? What about in the case of someone who cheated, but then the next morning would confess crying to their significant other, and hasn't cheated since then?
And no, I have never cheated
... The closest I've ever gotten was seeing two girls at once as "friends with benefits" during my college days for like a week or two... One girl is enough trouble for me, and balancing 2 just isn't worth it
h: