God, where do I even start? My life has turned into something you’d expect in a movie. I’m working up to the end, so bear with me. All I’ll say for now is that my girlfriend and I have never had trust issues, and I would never even suspect her of cheating if it wasn’t for what happened.

I’m a 28-year-old guy, pretty clueless about jewelry. I’ve been with Meredith, my girlfriend, for three years. She’s 26, and I can’t imagine my life without her. Deciding to propose was easy, but picking out the ring was hard. I leaned on Meredith’s friends for advice, especially Lisa, her best friend.

One day, Lisa came over to help with the ring, but we decided to visit a jewelry store instead. I texted Meredith to ask when she’d be back, under the guise of ordering takeout. Her reply said she was shopping with Lisa—the same Lisa standing next to me. We stared at each other, confused and shocked.