Heroes' star Milo Ventimiglia sports killer khakis in GQ March 2008 issue. The 30 year-old heartthrob talks about growing up, being GQ's Obsession of the Year and his loveteam with Hayden Panettiere. More killer photos after the jump...

It seems like you’ve aged a decade since the first season of ‘Heroes.’ What gives?
Going through my twenties playing a teenager was kind of rough. I just finally put on a little man-weight. My face changed. Nothing I could do about it, man. It was a fucking train I could not stop.

Right, HALO. That’s what the blogs are calling you and Hayden. Does the nickname bug you?
You know what, man—it makes me smile.

If you two are dating, why not just say so? I read you bought the girl a ring from Tiffany’s!
When you’re in the public eye, you try to keep whatever you can private. People can speculate and talk. But what can you do—stop living your life?

Full interview and pics here.