Sam Smith, known for their hit song 'I'm Not The Only One,' and British fashion designer Christian Cowan have sparked engagement rumors after attending the 2026 Met Gala together. The couple, who have been in a relationship for over three years, reportedly discussed their engagement during the event, according to an unnamed source cited by media outlet Page Six. The source described them as 'over the moon' and deeply in love. A second source also confirmed the engagement, but details remain scarce. As of now, both Smith and Cowan have not publicly addressed the rumors. At the gala, Smith wore a stunning heavily beaded black robe designed by Cowan, while Cowan sported a black embellished suit. The couple first fueled dating speculation in December 2022 when they were spotted together in New York and later made their relationship public at the 2024 Met Gala. Smith has previously expressed a desire to keep their relationship private, stating that love is a gift that should be cherished away from the public eye.