Panettiere and Ventimiglia finally admitted they are a couple

Hayden Panerriere and her Heroes co-star Milo Ventimiglia have made it public that they are dating.

At a pre-Christmas Water Grill party in Los Angeles Milo referred to Hayden as his girlfriend. Also, he revealed his feelings for the actress.

The pair has previously denied all the rumors like they are a item, but guess the open secret is finally not  a secret anymore.

A source told The Sun, “He called her his girlfriend and said that he loved her.”