The 28-year-old Australian singer, who married Jules two years ago after eight years of dating, said that they become more in love with each other the longer that they are together.
Sebastian told Woman's Day magazine: "Valentine’s Day is no different from any other day of the year - they’re all very special and we just try to make each one count. Romance doesn’t have to be all about flowers and boxes of chocolates.
"There are so many other ways to make your partner feel extra special. I always tell Jules how much I love her and how sexy she looks. And Jules loves nothing more than a nice hot bath and a gentle, soapy back massage."
Speaking from their beachside getaway in north Queensland, Sebastian said of the house: "It's our paradise. It's a place we both find invigorating, inspiring, peaceful and romantic."