 Still reeling from the shock of Caleb s announcement, Kirsten and the rest of the Cohen s try to welcome Lindsey as part of the family, while she and Ryan wonder where they stand after their first date and kiss. Marissa and D.J. finally find out about Jimmy s fling with Julie in which he has Sandy and Kristen throw him a going way party when he decides to move to Maui to run a fishing charter business. Meanwhile, Seth tries to be a bad guy to impress Alex to show her that she can be fun, and lets a slip about a fling Zach had during his Christmas vacation which he confided in Seth about.