Justin Timberlake JTimberlake083008_02_X17.jpg

Mmm maybe, maybe not!

Accompanied by steady girlfriend Jessica Biel, Timberlake is seen here heading back to his car over the weekend wearing jean shorts (I know, right?) and a large cross around his neck - seems the couple attended a gathering that also saw the likes of Britney's other ex, Kevin Federline!

When asked by our photog if Justin was gonna work with K-Fed, Justin said... well... just watch the vid below!