Matt and Eva show their passion

Matt Damon, Hollywood hunk and co-star of Stuck On You, is getting hot and heavy with actress Eva Mendes, who also starred in the Farrelly brothers' bizarre comedy.

After months of media speculation, Good Will Hunting Star Matt and Eva made a public demonstration of their love when they celebrated the New Year with pals Ben Affleck and Jennifer Lopez in Las Vegas, Nevada.

Damon has consistently downplayed rumours of his close friendship with Mendes, who he met on the Stuck On You set while still dating long-term love Odessa Whitmire.

But an insider told Page Six.com after observing the pair in Las Vegas: “They were definitely together.”