Kate Hudson and Matthew Bellamy
Dave M. Benett/Getty
09/17/2012 at 04:00 PM EDT
is feeling glee
The Glee guest star
, 33, was all smiles when she walked the carpet for the season 4 premiere of Fox's hit show recently – where she gushed about her rocker fiancé
, Matthew Bellamy.
"My love is just insanely, incredibly supportive of everything, and that's the best," Hudson told PEOPLE. "Everything is wonderful
. Everything is really wonderful."
Although Hudson and the Muse frontman, 34, each have successful professional lives, work is not a common topic at home.
"We're sort of more into our kid
[son Bingham, 14 months] than talking about career things," Hudson says, "but he loves [what I do]."
But Hudson's seemingly permanent grin comes from more than just her love life.
"I'm an active person," she explains. "I'm active with my kids, and I work out and I pay attention to those things, because I think it's important for everything – mind, body, all that. I am pretty happy."