(Cover) - EN Showbiz - Justin Timberlake and Mila Kunis are just good friends, insists a source.

Singer-and-actor Justin and Black Swan actress Mila appeared to be very close at an Entertainment Industry Foundation gala after the Screen Actors Guild Awards last weekend. And they reportedly went to another party and were inseparable, sources said.

But an insider is adamant that the relationship between the megastars is simply platonic.

Theyre friends, the source is reported as saying by People magazine.

Justin, 30, who recently starred in the acclaimed film The Social Network, is currently dating actress Jessica Biel. They are rarely seen at awards ceremonies together, yet the insider maintains the pair are on the right track.

Justin and Jessica are definitely together. Theyre happy in their relationship, the source explained.

And reports have suggested that the handsome former boy band member may be planning to propose to his girlfriend on Valentines Day.

A source told the National Enquirer that Justin bought an engagement ring believed to be worth about $500,000. It had previously been reported the duo had faced difficulties in their relationship recently. (C) Cover Media