Justin Timberlake has been spotted cosying up to his Alpha Dog co-star Amanda Seyfried. Omg! Did he cheat on Jessica Biel? Ok, perhaps I am making a big deal out of it but I am a romantic & idealistic nut so this isn’t good…

Timberlake, The SexyBack singer – who is dating The Illusionist star Jessica Biel – and 22-year-old Mean Girls actress Seyfried enjoyed a drink together at New York’s Pink Elephant club last week.

photos provided by PR Photos

Jessica Biel is way hotter – here is a photo of her posing in her swimsuit for GQ magazine. Click here more of Biel’s GQ photos.

(( A source told the New York Daily News newspaper: “They met up in the club and left together after just 15 minutes. Amanda’s no Jessica Biel, but they seem to enjoy each other’s company.”

Justin, 26, met Amanda in 2006 when they worked together on indie movie Alpha Dog which follows the story of a teenage drug dealer.

Timberlake has been dating Jessica Biel, 25, since February last year.

In August, it was reported the couple were planning to move in together, but while Jessica wanted Justin to move into her Los Angeles home so they could be close to the sea, he wanted to relocate to New York. – as reports by M&C