Being a heartthrob on a popular television show is very exhausting work and it can run you down if you don't take a break.  We spotted Penn Badgley going for by Columbia university yesterday with water in hand.  What do you think will come of Dan and Serena?  Do you think they'll get back together on the next season of Gossip Girl will there be new loves for them both?  What about Penn and Blake, will their relationship mirror their tv characters?!