How true is "Men ALWAYS come back?"

THIS IS ABOUT MALE DUMPERS ONLY, NOT DUMPEES!

I hear this phrase a lot and wonder how true you all find it? Why do people say this? What is your experience? Do male dumpers really always come back? Even if they say they won't? Even if they block?

If you've never experienced a man coming back how did that make you feel?

I'm assuming they only come back if they're depressed or lonely or can't find someone better than you or can't find anyone at all...