The duo got engaged in April 2011 and welcomed their son Bingham a few months later.
Hudson, who is currently starring as a dance teacher in Glee, has now told People that her fiancé is very encouraging.
"My love is just insanely, incredibly supportive of everything, and that's the best," she said. "Everything is wonderful. Everything is really wonderful."
However, Hudson added that she does not really discuss her working life with Bellamy, who is the frontman for Muse.
"We're sort of more into our kid than talking about career things," she explained. "But he loves [what I do]."
Hudson recently explained that she will marry Bellamy "eventually" but wants it "to be right".