Leonard tries to move out...again
After getting married to Penny, Leonard hoped he could finally move in with her. But, when Sheldon learned of an impending change in his living arrangements, he decided to revert back to 2003, a simpler time before he met Leonard.
Eventually, the trio came to an agreement and Leonard decided to call off the movers, at least for the time-being, in "The 2003 Approximation" (Season 9, Episode 4). Friends forever!
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