Credit: Instagram Photo: Desiree Hartsock and Chris Siegfried at Sean and Catherine's Wedding

Desiree Hartsock and her fiancé Chris Siegfried left Seattle for the weekend, joining lots of other Bachelor alum at Sean Lowe and Catherine Giudici's Santa Barbara wedding.

We know what you're thinking — Des, aka one of Sean's exes from his season, traveled all the way to California to see him tie the knot with another gal? That could make for an uncomfortable cocktail hour run-in — but not in the Bachelor world. A source tells Wetpaint Entertainment, “Both Des and Sean are very happy in their own relationships. There are absolutely zero feelings left between them. They’re just happy for each other."

Des and Chris are even planning their own wedding. Wetpaint Entertainment exclusively learned that the reality TV duo is thinking about walking down the aisle next winter. They're even looking at wineries for their special day. Cheers to that!

Don't Des and Chris look adorable at SeanCat's wedding? Des is totally glowing in that coral dress! Let us know your thoughts in the comments.

Credit: Splash News Photo: Desiree Hartsock and Chris Siegfried at Sean and Catherine's Wedding in Santa Barbara, California on January 26, 2014