You can stream or purchase the episode through several platforms: "Two and a Half Men" Oh WALD-E, Good Times Ahead ... - IMDb
After coming clean, Alan proposes to Gretchen, who accepts. They decide to use the wedding arrangements Larry had already paid for. Watch Two And a Half Men S11E22
The ceremony at Walden's beach house quickly unravels. A drunk Lyndsey crashes the wedding, landing in the cake, and Gretchen's ex-husband, Derek (played by guest star Brad Paisley), appears to win her back. You can stream or purchase the episode through