He told the new issue of GQ magazine : "It was just one of those moments where halfway through the dance, it was like, 'Oh, I think I just crossed a line'.
Asked when he knew Blake was the right girl for him, he quipped: "Probably after the sex!"
"And then I walked her home. And, uh, you know, I don't really need to go into what happened after that."
The Age of Adeline star threw a 40th birthday bash for her hunky husband last month at one of the first places they went on a date together, where she says they "fell in love"