Watch This Is Us Online: Season 1 Episode 12

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How did Jack feel about Rebecca forgetting his birthday?

That was a key concern on This Is Us Season 1 Episode 12 as her triplets' due date approached.

Meanwhile on this hit NBC drama series, Dr. K struggled to cope with the loss of his wife, but who showed up to support him?

Also, the firefighter who brought Randall to the hospital tried to save his marriage. 

Use the video above to watch This Is Us online to get caught up with the latest developments for the family as we got the truth about one of the biggest mysteries. 

Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.

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This Is Us Season 1 Episode 12 Quotes

Hey! Thanks again for the bathroom sex at Froggy's, Jack!

Rebecca

Miguel: So, what are you doing for your birthday?
Jack: She went to the darkside, man. I actually think she forgot my birthday.