If only face-to-face time counts, then about 3 hours with the current Mrs. We used to live very far away from each other, so we'd communicated for months but hadn't met face-to-face. As it was, about 1 hour was taken up with the ride from the airport and so on, so that's not that much lead-time. It's a little indecorous to just maul her in the cab or the lobby, so I was fine waiting until I was checked in to the hotel.
Otherwise, about 12 hours (long before I met the Mrs.) That was continuous hangout time, where casually meeting for lunch led to an afternoon hangout, stopping for some food, then catching a movie, finally ending with her crashing in my hotel room (she lived on the other side of town from where I was staying and where we were hanging out, so the movie meant she was going to crash there.) Technically, I fibbed about the room having a chair I could sleep in, but if I struck out, I was willing to crash on the floor (and tired enough to.) I didn't strike out-she was up for something as soon as we were ready to crash, so we made up for lost time that night and before breakfast (after I checked out, too, since she had the day off and I had light luggage that was easy to carry around.) But 12 hours continuous isn't much of an accomplishment here.
Oh, college, about 4 hours. We had a party at the dorms, and one attendee lived there and I did well at the party, so when it broke up, I went upstairs and got invited back to her room. Dance majors have a lot of stamina, I have to say.
For this thread, that's still not fast. I would have managed faster at least once, but cock-blocking is a real thing and a supposed "friend" derailed my game.
