This guy seemed to man-up harder than most on these Date Lab things, but yeah, he didn't finish strong enough. He was bold enough to go for the kiss, but didn't give the strong indication that he wanted to see her again (even though he thought he had the email address for the follow-up). He was self-aware enough to realize his mistake after the fact. I also like that he openly admitted that he doesn't go on dates looking to be friend-zoned - he wants pussy. If he had gotten that second date, he could have fought through that "lack of spark" and pushed up hard. She already thought he was attractive, so he just needed to up the physicality to get the butterflies fluttering.
"The best kind of pride is that which compels a man to do his best when no one is watching."