Go camping and snuggle up close at night in one sleeping bag. Make love on a beach under a full moon. Make love on a plane, in an elevator, on a train. Experience a sweat lodge together. Go horseback riding together.
Test drive a very expensive sports car, go jet skiing, skydiving.
Take a cruise. Try your lovers favourite sport together. Take each other shopping for lingerie. Fly kites, play frisbee. Take a jacuzzi under the stars.