I put together episode guides for all three BMP shows back around the time of the Real World Awards Bash in 2008, basically because I wanted to make sure I had collected all of the unofficial episodes and one-off specials on VHS tapes (back in the day, of course), because clip shows and reunions still very often get left off future DVD releases/iTunes/Amazon Prime (and, as we just found out with Key West, the marathons on MTV Classic). I used TV.com as a resource; the website has been revamped since then (some stuff is missing now), but it remains a pretty good resource.
Anyway, I have two hook-up specials:
One aired during RW Chicago around April 15 or 16, 2002, hosted by Syrus and Becky ("The Real World Hook-ups, Heartbreaks and Happily Ever Afters.").
The other ("Real World/Road Rules: 19 Degrees of Reality TV Hookups") was hosted by Kevin and Malik of RW: Back to New York. This archived website lists the airdate as Feb. 14 or 15, 2003 -- which makes sense, re: Valentine's Day.