Watch How I Met Your Mother – Season 3 Episode 16 – Sandcastles in the Sand
When an old flame from a Robin Sparkles love ballad video comes back into her life, Robin turns into the head over heels 16 year-old girl she was the first time around. While the gang tries to help Robin see what a loser the guy has become, Robin has a hard time letting go of her past crush. But when he breaks up with her again, it’s Barney who finally helps her to realize how awesome of a person she has become. And in a shocking moment between them, Barney and Robin sleep together.
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