premise: Man and woman rowing on surfboards third rower in distance. hypothesis: Couple go out for their first surfing session as a couple.
neutral: Couples are learning their surfing session.|neutral: A man and a woman together are not always a couple.   Session implies a lesson being given by the third rower. The third person could just be a friend, not an instructor.|neutral: The surfing session isn't necessarily the first one and not man and woman are couple.