Jon Gosselin cool with his ex-brother-in-law.

Well, almost ex-brother-in-law. Jon Gosselin and Kevin Kreider hung out together this past weekend, along with Kevin's wife Jodie. Kate's brother and his wife had once referred to the Gosselin marriage as a "sham" and said their children were "overworked." Looks like Jon's peace pipe worked.

It's reported Jon was man of the house this weekend at the Gosselin's Pennsylvania estate while Kate flew to Los Angeles to do publicity. The Kreiders came knocking when Jon invited them over, and reporters saw them exchanging hugs and laughing.

Kate Gosselin's relationship with her brother is said to be strained after he sold stories last spring to Star and RadarOnline, suggesting that the Gosselins' show was harmful to their family. It's suggested that Jon Gosselin and Kevin Kreider may be forming an alliance against Kate...or maybe it was just a play-date among cousins?

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Click here to find out why Kate Gosselin didn't show up for her court hearing today.

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