What was the first title of the puzzle?
Hmmm.... I don't think finding two sets of pairs of letters out of some 14/15 letter strings and looking for a fairly specific but unnatural attribute without any real incentive is as simple to the solver as the constructor thinks it is. I mean, sure, it makes sense once it's pointed out but it's not a natural thing to look for.
Maybe if the title were "50 Ways (and other things) to leave your lover"..... (Um, was that the first title?)