Emily Blunt and Michael Bublé in 2007
DENNIS VAN TINE/LFI
09/29/2008 AT 01:05 PM EDT
Two months after his breakup, Michael Bublé has nothing but nice things to say about ex-girlfriend Emily Blunt.
"Emily was a substantial person and amazing still," the pop singer tells Entertainment Tonight Canada
in an interview airing Monday night. "Top girl. Top class."
Bublé, 33, met The Devil Wears Prada
star in 2005. He explains busy schedules were the reason behind the split in July
from Blunt, 25.
"In my business it's tough to go out with another artist because you're never together," Bublé says. "You're lucky if you can see the person once every two to three months, and with Em, she was on her movies and I was doing my thing so it made it more difficult."
Still, the singer admits the breakup was hard. "I'll go home and I'll curl up in a ball and I'll cry. I'm not kidding. I'll just cry."
Bublé adds the split actually helped his songwriting.
"I'm really sentimental. That's why I think I love the music that I love," he says. "It's always tough to end a relationship, isn't it? It helps me actually to write. Whatever I'm going through, it's usually helpful."
Blunt inspired his 2007 Grammy-nominated song "Everything." After the breakup, Bublé penned a new song, "I Just Haven't Met You Yet." He said he's looking for another substantial woman for his next relationship.
"I don't want a pushover," he said. "I want a strong human being that doesn't put up with my BS. It turns me on actually."