There was a hetero couple who had known each other for years as friends. One day, during a vacation together, they realized their feelings had changed. They shared a passionate kiss and that led to a more intimate relationship. Their sex life was filled with exploration and discovery of each other's desires.
Well, if it's about the unique aspects of having a hetero first strapon boyfriend, it can bring new experiences. It might involve exploring different forms of intimacy and mutual understanding. You have to respect each other's desires and be willing to learn together.