once a cheater always a cheater

Check out the clip above for more on Anderson's take (and watch the full HuffPost Live clip here), then click through the
Eric Anderson, Ph.D. joins Caitlyn to explain why the saying "once a cheater, always a cheater" rings true.
We've heard it time and time again: "Once a cheater, always a cheater." But is there any truth to the old adage? If Hollywood