06/19/2015 04:19 pm ET | Updated Jun 19, 2015

The Secret Jack Antonoff Kept From Girlfriend Lena Dunham

Jack Antonoff and Lena Dunham have to be one of the coolest couples out there, but sometimes even they choose to withhold information from one other.

Such was the case for the Bleachers frontman recently, he recounted Thursday on HuffPost Live, when he decided to initially hold off mentioning his new docuseries, "Thank You And Sorry," to his "Girls" creator girlfriend. But Antonoff had a very legitimate reason, and we're sure Dunham understood. Watch the clip above to hear more, and catch the rest of his conversation with HuffPost Live here.

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