Bonham Carter and her 52-year-old long-term partner live in separate houses next door to each other in London, which has led to people thinking they live in an 'Alice in Wonderland' style world.
But she insists that the couple don't mind these rumours circulating because it keeps an air of mystery hanging over them.
The 44 year-old told British Total Film magazine: '[People] think we're the Addams Family! But do you know what? I think all that is rather marvellous. The more myths that follow you, it's a more protective shell around you.
'You've got to keep the truth private - so the more c**p they write and the more sensational it is, the further it is from the truth. It's a sort of shell of bull***t.'