Alan and Lyndsey's relationship of three years ends as she wants to move on. Rose returns and briefly dates Walden, later stalking him as she did to Charlie. Walden begins to date a poor but ambitious woman named Kate (Brooke D'Orsay) and changes his name to "Sam Wilson", pretending to be poor to find someone who wants him for him, not for his money. They later break up when he reveals who he really is, though Kate realizes that Walden's money helped her become a successful clothing designer. Jake announces he is being shipped to Japan for at least a year, so Alan and he go on a father-son bonding trip. Other than a cameo in the series finale, this is the last time Jake appears on the show, though verbal references are made to him. In the 11th season, a young woman arrives at the beach house, announcing that she is Charlie Harper's biological daughter, Jenny (Amber Tamblyn). She moves in with Walden and Alan, later displaying many of Charlie's traits, including a love of women and alcohol. Lyndsey begins dating a man named Larry (D. B. Sweeney), and in an attempt to learn more about Larry, Alan takes on the pseudonym "Jeff Strongman". His double-life becomes complicated when "Jeff" begins dating Larry's sister, Gretchen (Kimberly Williams-Paisley). In the 12th season, Walden decides to reprioritize his life after a health scare by deciding to adopt a baby. He realizes that the only way to do this is to be married, but does not know anyone who will do it, so he asks Alan to marry him and pretend that they are a gay couple, thus ensuring success at adopting. Jenny moves out of the house and moves in with Evelyn due to Walden and Alan preparing to adopt. They adopt an African American child, Louis (Edan Alexander), and subsequently divorce to pursue relationships with women. Alan proposes to Lyndsey a second time, and she accepts, while Walden begins a relationship with Louis' social worker, Ms. McMartin (Maggie Lawson). Charlie is revealed to be still alive, having been kept prisoner by Rose until escaping, but he is killed before he can reunite with Walden and Alan. Following a February 2010 announcement that Sheen was entering drug rehabilitation, filming of the show was put on hiatus, but resumed the following month. On April 1, 2010, "People" reported that after seven seasons, Sheen announced he was considering leaving the show.