A ton of hard-bodied men and women have found love on "The Bachelor" and "The Bachelorette" ... but, as we saw with Ali Fedotowsky and Roberto Martinez this week, it doesn't always last.

Can you believe that after 22 seasons on the air, only 2 couples who got engaged on the show are still together -- and both are from "The Bachelorette!"

See who made it last ... who made a valiant attempt to make it work ... and who called it quits a mere month or two after the show wrapped!

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