Greek finally returned last night with a new episode, "Take Me Home, Cyprus-Rhodes," and with the second half of the second season, we know Jsse McCartney guest stars for a six episode arc as Andy.
Andy is a football played and the top freshman being recruited by Kappa Tau and Omega Chi. Jesse teased to E! Online that "Calvin is trying to get me to join the Omega Chi fraternity. Then there is Rusty, who is trying to get me to join Kappa Tau. It's definitely safe to say it's between those two. He goes where you probably don't expect him to go."
If that cryptic line he delived to E! Online wasn't enough for you, we did a little investigative research and found out from future epiosde descriptions that Andy will in fact be joining Kappa Tau.