“Insanity: doing the same thing over and over again and expecting different results. Albert Einstein,” she Tweeted on Sunday.
Kardashian, 36, called it quits with Disick, 32, in July after photos surfaced of him partying and cozying up to another woman. They had been together on and off for nine years and are parents to three kids: Mason, 5, Penelope, 3, and Reign, 8 months.
Kardashian recently returned from a family vacation in St. Barths, where she showed off her killer bikini body – and it looks like she’s back on the fitness grind after she posted another workout selfie on Sunday.
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Disick also enjoyed a little fun in the sun, spending time with Girls Gone Wild founder Joe Francis in Mexico.