Greg and Molly, established relationship. Molly has fantasized about submitting to her sexual partner, but has always been too shy to bring it up, so she never has. At some point, she and Greg decide to try it (up to you if Molly works up the courage or if Greg gets there first). Hot, sweet sex, please! Greg's level of experience and initial enthusiasm can be up to you, but I do want it to be something that they both enjoy. I would prefer it to mostly focus on the submission, but pain play/sadism is fine too.