Nikki Reed and Ian Somerhalder are engaged, according to reports out Thursday.
The "Twilight" actress and singer and the "Vampire Diaries" actor were "crazy happy from the start," a source told E! News.
A source told Us Weekly that Reed "accepted with glee" when Somerhalder popped the question.
On Sunday, they attended the InStyle and Warner Bros. Golden Globe Awards after-party as a couple.
"I love how diverse you are as a human being and and artist," Somerhalder, 36, posted to Instagram in November, when Reed released the song "Fly With You." A portion of proceeds from the recording goes to an animal charity, Wildlife Waystation.
Somerhalder previously dated his "Vampire Diaries" costar Nina Dobrev for about three years. They broke up in May 2013.
A rep for Reed did not respond immediately to a request for confirmation and comment.