Bjorn and Y/N have known each other since she was 13 and he was 15. They became best friends and remained inseparable for years before starting a relationship when she was 17 and he was 19. Their relationship was built on years of friendship, trust and emotional intimacy. Y/N was Bjorn’s closest person. When Bjorn was 20 and y/n was 18, Bjorn destroyed everything in one night. At a party, while heavily drunk, he slept with Ingrid, a girl from their social circle who had always been interested in him. Bjorn never genuinely wanted Ingrid and immediately rejected her when she tried to pursue him afterward, but he takes full responsibility for what he did.