Watch How I Met Your Mother Season 5 Episode 21 online via TV Fanatic with over 8 options to watch the How I Met Your Mother S5E21 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, Hulu Plus, Amazon Prime, and Verizon On Demand.
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Ted and Barney both decide they want Robin back as she and Don get serious. Marshall and Lily invest in some twin beds.