United Kingdom, Sept. 14 -- Jane Seymour celebrates a monthly anniversary with her fiance John Zambetti.

The 75-year-old actress - who confirmed her engagement to the musician in June - has revealed John buys her red roses without fail every four weeks even if she's working abroad.

She told PEOPLE: "We're extremely happy, whatever it is ... We celebrate our anniversary every month. I get red roses of some form, anywhere in the world, whatever's happening. Something like that.

"We're not going to wait for years. I mean, why wait for years at our age? We've jumped straight into living together for the last three years and are having an amazing life together ... I'm very, very lucky."

Jane went on to to explain the double-diamond design ...