DEAR ANNIE: I’ve been in a committed relationship with my girlfriend, “Sarah,” for three years. We live together and have been discussing marriage. However, I recently discovered something that’s left me feeling confused and betrayed. While cleaning out our closet, I stumbled upon a hidden stash of letters and mementos from her ex-boyfriend, “Scott.” The letters were deeply personal and intimate, expressing a level of passion and emotion she’s never shown with me. They dated for four years before we got together, and she’s always insisted that she’s completely over him. I confronted Sarah abou…
