Walden's worried how his "relationship" with Miss McMartin will affect his plans to adopt Louis. Alan's hoping Lyndsey will stay in L.A. now they are back together. But she already sold her house so Alan tries help her find a place to stay. But when she suggest they move in together Alan doesn't respond well. So Lyndsey decides to go to San Francisco. Later Alan and Walden talk and Walden says Alan doesn't want to move in with Lyndsey because he doesn't want to leave the house. And Alan tells Walden Miss McMartin is perfect for him. So they both try to get them back.