He isn't the second most popular romance though, that was Karlach. None of the guys even make the list. According to the romance stats less than 12.9% of players got to his act 3 scene. His smooch button just got hit a lot of times.
Number of times kissed does seem like valuable info to me, though of course it isn't the full picture. I've always wondered how Larian counted "most romanced." Like, does it start in act 1 when you can start "dating," or does it not count until you make a commitment in act 2? If it's simply "X % of players romanced character Y," does that mean that one playthrough with character Y is counted the same as doing 10 playthroughs where you romance character Z? I think that is what it means, so it wouldn't tell us much about which romance people wind up appreciating the most.