The reality star took to the social networking site, writing: "Some cause happiness wherever they go; others whenever they go," following by a laughing face emoticon.
The 30-year-old then posted another cryptic tweet, possibly referring her split, typing: "Be grateful for what you have and stop complaining - it bores everybody else, does you no good, and doesn't solve any problems." Amen (sic)"
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Khloe and French reportedly split up last month after a six-month romance. The couple were often pictured out together and French had reportedly hit it off with the rest of the Kardashian clan.
But according to insiders, Khloe became tired of the relationship and felt things had gotten too serious too quickly.
A source told a US magazine: "They are on a break. The relationship got too heavy and Khloe needed to take a step back."
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Another friend of the former couple revealed: "It grated on her that he became so dependent on her."
French is the first man Khloe has been linked to since her split from basketball player husband Lamar Odom last December.
Khleo split from Lamar following allegations that he had cheated on her and was suffering from drug addiction.