How I Met Your Mother, Season 7

[Lily and Marshall arrive at Ted's apartment and see it empty. Lily sees note]

Ted:
Dear Lily and Marshall, I don't know if you know this, but I never took your names off the lease. Well, today, I took my name off it. The apartment...is now yours and I think I've found what to do with Robin's old room. [They walk in to Robin's old room and find that it is painted blue and has been turned in to a baby room] See for me, this place had begun to feel a little haunted. At first I thought it was haunted by Robin, but I now think it was haunted by me. Well, no ghost is at peace until it finally moves on. I need a change, and I think you do too. This apartment needs some new life, so please, make our old home your new home. It is now ghost-free. Love, Ted.