Couple Alert? Amanda Seyfried Shows Up at US Open with Mystery Man (PHOTOS)

Amanda's Puppy Love
Amanda Seyfried takes her adorable dog for a walk.
Amanda Seyfried stepped out with a new guy by her side at the US Open, but who is he?

The Big Love actress laughed and chatted with the mystery male on Labor Day as they watch the match. This new guy may just be a friend, but as far as we know Amanda is single and available to mingle. She hasn’t been seen with her rumored ex Ryan Phillippe since earlier this summer. Given their body language, do you think this could be a new love interest for the actress? Sound off in the comments!

The US Open boasted a slew of other young starlets. 

Blake Lively, Vanessa Hudgens and Brooklyn Decker were all in attendance to catch a little tennis. Click the pics below to see Brooklyn cheering on her hubby Andy Roddick