It was supposed to be simple. A celebration filled with people I didn't know, too much champagne, and enough laughter to make me forget my aching heart.But one polite introduction ruined it all.When Christian McCarthy's eyes met mine from across the room, I forgot how to breathe, and the world forgot with me, too. But his ring is on his sister's finger, and he belongs to her. So, why does it feel like we’ve already gone too far?