The Fool's Gold star has been dating Muse frontman Bellamy since April (10), when they met at California's Coachella Music Festival, and they went public with their romance in July (10).
But gossips have claimed the relationship is waning because the singer is not a people person.
A source says, "She doesn't like how he never talks around her friends and family. Matt doesn't have much personality. She's bored and ready for the next guy."
However, Hudson's spokesperson has shot down the allegations, telling Us Weekly magazine the reports are "ridiculous and untrue".