Since they were first spotted biking together this summer, Matthew McConaughey, 36, Lance Armstrong, 35, and Jake Gyllenhaal, 25, have been the Three Amigos – everywhere from the University of Texas Longhorns game in Austin to club-hopping in L.A., Miami and New York. And as for those rumors about McConaughey and Armstrong being more than pals? "We tried it. Wasn't for us," the actor joked to Details magazine.