'Jon & Kate Plus' ... Each Other

5/4/2009 11:42 AM PDT BY TMZ STAFF
Jon Gosselin from "Jon & Kate Plus 8" was spotted with another woman this weekend ... his wife, Kate.

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While pics surfaced of Jon leaving a nightclub with a lady friend last week, the not-so-happy couple appeared together at something called the Pennsylvania Women's Show this weekend.

Although Jon claims the woman was just a friend, he did admit his actions "showed poor judgement" ... much like Kate's choice in hairstyles.