Regency Era-esque AU. Dean Winchester has built the life expected of him, marrying Charlotte Bradbury, raising a family, maintaining his estate, spending winters in ton. However, their life together is built on a shared lie - they are best friends, united to protect the secret of their true desires. Charlie has found a companion who shares her preferences, but Dean is lonely for a want of partner. That is, until he learns of Ms. Naomi's exclusive, monthly, male-only parties, and manages to secure himself an invitation...