Milo Ventimiglia & Hayden Panettiere are now a couple, says one mag this week.

WOW!

People reports: “Hayden’s mom adores Milo. She thinks he’s so cute … She tells her friends that he’s her boyfriend. She’s very proud. … He’s even met her grandparents. He fits in perfectly with the family. Milo jokes around with her little brother … They’re buddies.”

It gets hotter!

According to People Magazine: When they are together, “they’re very affectionate and very comfortable around each other. He really takes care of her, even down to the little things like giving her a back massage and going with her to work things.”

Ventimiglia is 30, Panettiere is 18 . Says one Source: “At first it doesn’t seem like there’s a big age difference, but then you do see it. … He’s more proper and reserved, and she’s still playful and very girly.”