Five months after a breakup, the speaker is still stuck on what happened. The relationship once felt like it might last forever, but now it seems like "a scintilla," a flash of light that appeared and vanished. Time has gone by, yet the speaker keeps writing about this person and wondering what could have been.
The main feeling is regret mixed with stubborn love. The speaker admits to yelling instead of saying "I love you," and wishes they had held on longer. At the same time, they accept that you can't keep someone who doesn't want to stay. They say they never wanted to turn away, but sometimes that's how things have to be. The ending is a quiet plea: don't forget me.
The mood is raw, wistful and sad. Short lines and plain, direct wording make it feel like a private confession, with no polish and little attempt to hide the hurt.