I found The Amazing Race Asia 3 spoiler in RFF: And here's the post from RFF:

http://forum.realityfanforum.com/index.php/topic,15379.msg302763.html#msg302763
Hi peeps. We have found out the names of some of the racers for TARA 3. This a Philippine team in particular. I just would like to credit my buddies at the the other site who helped me uncovered their identities. Thanks to Benjbuddy and Eragon of entermyworld.heavenforum.com (This is plugging, huh!!! )

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The guy is Geoff Rodriguez and the lady is his girlfriend, Tisha Silang. Both of them are celebrities in the Philippines. They are dating models and friends of Marc and Rovilson.