“The Bachelor” is about to wrap up its 13th season (or the 16th, if you include the four seasons of “The Bachelorette”), but hasn’t really been the subject of water cooler talk for years. It’s been enough of a success for ABC that they’ve kept it around this long, but studio execs finally struck oil again this season, by electing to feature Jason Mesnick as the man 25 women wanted to meet and marry. The show has seen a ratings surge of 37% above its last season (featuring my personal fave, The British Bach), and the network is already getting ready to do a casting call for a 14th season, after the fifth “Bachelorette” airs this summer. But can they recreate the success of this season? Only if they find another sexy single dad! It’s no coincidence that “The Bachelor” is suddenly the show to watch when the man in question is raising an adorable son on his own. After all, women LOVE a hot dad, especially a dad who has to shoulder the burden of parenthood all by his lonesome. All 25 women were eager to become insta-Step Mommies to Mesnick’s son — though most of them seem ill-equipped for the job. So what would happen if ABC tried the same approach with “The Bachelorette,” and found a (hot, always) single mom as its catch? Would 25 would be suitors come running, ready to be Insta-Step Daddies? Somehow I doubt it.