THEN: Kristin Davis as 'Jenna'
When Jerry knocks his girlfriend Jenna's toothbrush into the toilet, he's unable to tell her before she uses it. In revenge, Jenna puts "something of his" in the potty, which kicks Jerry's germophobia into overdrive. After she and Jerry split, Jenna begins dating Kenny Bania.—XFINITY Entertainment Staff (Photo: NBC)
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