I recommend "I Loved You" because it has a poignant and wistful farewell atmosphere.

It feels like emotions build up subtly, so you naturally get drawn into the song as you listen. The lyrics beautifully capture the feeling of being unable to forget someone you loved, making it even more relatable. I also like that the guitar and drums aren't overpowering, allowing the vocals and lyrics to stand out particularly well. It sounds like it's sung calmly, but the lingering regret within makes it sound even more poignant. It really brings the atmosphere to life when you listen to it alone at night. If you like quiet breakup songs that linger in your mind, I recommend this one.