Katy Perry says it’s a struggle trying to keep up with her fiancee Russell Brand in the bedroom, but she tries her best.
She said of the comic once famed for his womanizing ways: "Can you imagine the kind of responsibility I have with his reputation? I'm bedridden most of the week."
The 25-year-old star – who has been dating the British funnyman since last September – also believes she has worked out a formula for his good looks, and part of the attraction is he looks like Jesus.
She said in a magazine interview: “His look is Jim Morrison meets Charles Manson meets Jesus meets a little bit of Elvis Presley. He's a walking genius. Just standing next to him makes me smarter.
“He's good for me. He's not a p***k in any way, shape or form. He's the boss; he calls the shots. I like that. I've been waiting for someone I couldn't steamroll."
Russell, 34, proposed to Katy on New Year’s Eve during a holiday to India with a ring featuring two rubies and the inscription ‘The one I’ve been waiting for’.
The pop beauty was astonished by the personal band, saying: "I love it. I'm glad he didn't go for the 'every other b***h in Beverly Hills is wearing it as well' ring."
Speaking about the proposal, she added: "It involved fireworks, elephants, Indian dancers, horse-drawn carriages and tens of thousands of flower petals."