Milo Ventimiglia, Hayden Panettiere Hold Hands

Aww. So cute. It's official: Milo Ventimiglia is so hittin' that!

By that, we mean our girl Hayden Panettiere. While this would normally spark extreme jealousy and bitterness among our staff members (see John Mayer and Minka Kelly), we have no problem with Milo. So he's kind of our man!

For a long time, Hayden Panettiere, 18, and Milo Ventimiglia, 30, have been doing their best to deny any co-star lovin' between them. But it looks like their cover has finally been blown and the Heroes stars have gone public.

The twosome was spotted going on a shopping excursion, then later at the movies, where they took in Atonement, in L.A. Nothing says dating like making out in the theater while Keira Knightley nude appears on screen.

Here's Milo Ventimiglia and Hayden Panettiere (combined age 48) ...

Can't get enough of Hayden and Milo? Heck, how could you possibly?

You can't deny that these two make an awfully sweet couple, right?

Check out TMZ's gallery of Halo photos for many more shots...