"We think it's important to show the fans what this moment means for Beckett and Castle and how it may change and complicate their relationship," he dished to TV Guide about the premiere.
Back in December, Marlowe told Wetpaint Entertainment that Caskett's first time would be more than just a "roll in the hay," and that's a promise he intends to keep. Instead of splitting the couple up, à la Moonlighting, Marlowe plans to explore "the fun of being in a relationship."
And as for the sex? We think Marlowe's tweet says it all: