HAPPY ENDINGS - "Your Couples Friends & Neighbor" - Jane insists that she and Brad befriend a sophisticated couple, Dianne and Carl (guest stars Danielle Schneider, Brett Gelman), but Brad resists the idea. Max and Dave can't figure out why food and other things are disappearing from their apartment. Alex confides to Max that Dave walks and eats in his sleep, but the truth is far stranger. Meanwhile, Alex starts dating a cute artist (Michael Mosley) she just happens to meet hanging around Max and Dave's place, on "Happy Endings," WEDNESDAY, APRIL 20 (10:00-10:30 p.m., ET) on the ABC Television Network. (ABC/BRUCE BIRMELIN) DAMON WAYANS JR., ELIZA COUPE