Cheating on someone and real love

A smart piece of advice and a good perspective for couples of any age to have and live by, but especially those starting out. Wish I had read and incorporated such advice when I was younger; it would have made a world of sense and might have made me look at some people quite differently. In other words, I would have wasted less time and expended less energy on the wrong people. Because if people cheat on you, they're the wrong people for you. They don't deserve your time, your love, or your loyalty.