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Matt Webb Mitovich

“Sandcastles in the Sand” — When Robin (Cobie Smulders) rekindles things with an old flame, James Van Der Beek (“Dawson’s Creek”) guest stars as Robin’s first boyfriend Simon. He crushes Robin again, but Barney, in his own inimitable style, helps her realize that she is awesome, on HOW I MET YOUR MOTHER, Monday, April 21 (8:30-9:00 PM, ET/PT) on the CBS Television Network.
Randy Tepper/CBS
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