TV Article 'How I Met Your Mother' spoiler: Who's the Sexless Innkeeper? By Michael Ausiello Published on August 25, 2009 03:38PM EDT The unofficial logline for How I Met Your Mother‘s fourth episode — titled “Best. Night. Ever.” — just landed on my desk and it’s predictably hilarious-sounding… Marshall and Lily want to hook up with Barney and Robin for double-dating and fun, but their desperate eagerness to please is a huge turn-off. Meanwhile, when a succession of girls come to his apartment and immediately fall asleep, Ted is bummed to learn he is a “Sexless Innkeeper” whose “dates” are only interested in a comfy place to crash. Sept. 21 (a.k.a. HIMYM‘s premiere date) can’t come soon enough.