Five years had passed since I broke up with my ex-boyfriend, yet his shadow still lingered deep in my heart. Still, I was satisfied with my current life and felt I was taking good care of myself. I'd even met a wonderful new boyfriend—someone I'd introduced to my family, and I truly believed I was ready to move forward. Then one summer day, I unexpectedly ran into my ex. After that, his image remained quietly embedded in my mind. And then one day, a message arrived on my phone. The sender was my ex.