Hayden, 18, was seen house-hunting in Los Angeles last weekend and reports suggest she has already asked her co-star boyfriend, who is 12 years her senior, to live with her.
A source told In Touch Weekly magazine: "Hayden and her mother looked at several condos, mostly in the Beverly Hills area. Hayden really wants her own place."
Hayden's mother is said to be fully supportive of the big move and has given Milo her seal of approval.
Another source recently said: "Hayden's mom adores Milo. She thinks he's so cute. She tells her friends that he's her boyfriend. She's very proud."
Milo and Hayden first sparked romance rumours when they were seen getting close at an Emmys party last September.
The couple initially denied they were an item, with Milo insisting they were just good friends.
In November last year, he said: "She and I are close friends. It's only natural that people are going to couple us together."
However, Milo finally came clean about the relationship when he toasted "his girlfriend Hayden" at a Los Angeles party.
An onlooker said at the time: "He called her his girlfriend and said that he loved her."
TAGS: Celebrity Hayden PanettiereMilo VentimigliaHeroes