The singer calls fiancé Ryan Adams "a good egg" and ex-boyfriend DJ AM "like family"

Mandy Moore may be engaged to singer-songwriter Ryan Adams, but he isn’t the only important guy in her life.

In the April issue of Marie Claire, Moore, 24, discusses her strong bond with ex-boyfriend, DJ AM [real name Adam Goldstein].

“[He’s] like family,” she says. If anything’s wrong, “I’d go in a heartbeat.” In fact, she already has: Moore raced to DJ AM’s side after he was injured in a plane crash in September.

Of course, she also has plenty of nice things to say about fianc é Adams, who, she reveals, captions pictures of her with the pet name “Bug.”

“He’s a good egg,” says Moore. “I’m in awe of him: his brain, his passion. He’s truly one of a kind.”

The magazine hits newsstands March 17.