Ross seeks comfort at a party with Chandler and Joey. Distraught over the breakup, he ends up kissing Chloe, the "copy girl" from the Xerox place.
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Chandler and Joey both compete for the attention of Chloe, which eventually leads to the aforementioned encounter between Chloe and Ross. DVD Features and Context Ross seeks comfort at a party with Chandler and Joey
If you are watching this on the Friends: The Complete Third Season DVD, you may find additional content: he ends up kissing Chloe