A guy logs into a dating site. He see's lots of women saying stuff like "no hook-ups just serious LTR's only".

So the guy connects with a girl and assures her that he is in fact looking for a serious LTR.... "with the right person" (with the assumption that it's going to take a few dates to find out if she's "the right person".

They go on a few dates. Maybe they even hook up. Then he dumps her. When she complains that she thought he was all about seeking a LTR, he says... "yes I was... but with the right person"

How often does this happen?