Some nights I catch myself scribbling lines in the margins of old books and thinking about which phrases actually mean forever. For me, lifelong devotion isn't fireworks or grand speeches; it's the quiet, stubborn promise to be present. That's why Elizabeth Barrett Browning's line from 'Sonnets from the Portuguese'—"I love thee to the depth and breadth and height my soul can reach"—resonates so hard. It feels expansive and steady, like a lighthouse that doesn't blink. I picture using that in a handwritten letter slipped into a coat pocket, the kind of thing you find years later and cry over in the kitchen light.
Pablo Neruda also gets close to the bone: "I love you as certain dark things are to be loved, in secret, between the shadow and the soul." From my late-twenties perspective, that line nails the idea that devotion survives the weird and the mundane. It's not only about being there during highlights; it's showing up during the weird phases—sickness, job changes, bad haircuts, Netflix binges that go on for weeks.
If I were picking a modern lyric to tuck into a vow, Christina Perri's 'A Thousand Years'—"I have loved you for a thousand years, I'll love you for a thousand more"—might be on my playlist. It's simple, repetitive, and somehow honest in the way a promise repeats itself. And finally, I like to add my own small truth when I write to someone I plan to stay with: "I'll keep choosing you, even when the map changes." That feels like devotion in daily clothes, and that, to me, is everything.