I have never had that happen.
I had pretty good instinct about liars and tools.
I did date one guy who got too
close too soon, and was doing some talking that, even at 18 years old, I could see was bullshit. I wasn't all that into him (I NEVER had sex with him) and he, as predicted did this weird "Break up" thing. First of all, I wasn't that into him, I thought we were just hanging out, wasting time together. He did say he wanted to take me to my Senior Prom (which I found a little weird, because he was in his mid 20s) But, I knew it was just that, wasting time together. He "Broke up" with me (which I found hilarious, because not only was I in an Open Relationship with My Man, and just messing around with other guys) but I wasn't that into this guy
he did the whole, "Someday you'll find someone you love as much as I love this woman" whoever the chick was that he was going after. He seemed upset that I wasn't
upset about this, and I wished him well. Then he asked if I wanted him to hold me while I cried.
Uh. I wasn't even close to crying. I told him I was cool and not to worry about it. He kept trying to convince himself I was upset, until I just walked away from him.
FTR, the chick he went after was still married and went back to her husband after a week with this guy.
I'd say I dodged a bullet, but it was never serious. I was getting more and more turned off every time I went out with this guy and his "breaking up" with me was a huge relief.
But, that's about as close to that as I've had.