It's been rumored for months, but now it appears to be fact:
Hayden Panettiere and Milo Ventimiglia are officially an item.
"Hayden's mom adores Milo. She thinks he's so cute," a family friend told People magazine. "She tells her friends that he's her boyfriend. She's very proud."
The source added: "He's even met her grandparents. He fits in perfectly with the family. Milo jokes around with her little brother. They're buddies."
We wish these two nothing but the best!