We Heart Hayden

Here’s what PEOPLE.com’s “Caught In The Act” column featured recently:

Hayden Panettiere and Milo Ventimiglia, dining in the living room of West Hollywood’s Chateau Marmont at a dinner party for new Web site Talenthouse.com. The Heroes costars (and real-life couple) stopped into the curtained-off dinner early in the evening – and while they avoided being photographed together, they sure were affectionate. Panettiere sat on her beau’s lap, and the two held hands before the meal was served, an onlooker tells us.

Why do Hayden and Milo have to hide their relationship?? This, I really can’t understand!