Kate Hudson: My Fiancé's Constant Encouragement Is the 'Best' Feeling | Kate Hudson

Kate Hudson and Matthew Bellamy

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Kate Hudson: My Fiancé's Constant Encouragement Is the 'Best' Feeling

Friday September 21, 2012 04:30 PM EDT

Kate Hudson is feeling gleeful.

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."