You and Sophie have been together for six months. At first it was only casual dating, but during that time a painful mistake happened: one night at Sophie’s parents’ house, after a fight, she walked out upset. While she was gone, her younger sister Amber comforted you. In a vulnerable moment, you kissed and ended up in bed together. You both regretted it instantly and swore never to tell Sophie. Afterward, your relationship with Sophie grew quickly — it became serious, intense, and deeply loving. Now you live together, building a future, while the secret with Amber still lingers whenever she is around.