To me the song is about past lovers who for whatever reason couldn’t be together. Timing or an event happened that drove them apart. Reconnecting again they discover there is still this love between them that they can’t shake. It comes rushing back, the feelings, the love. He wants more, does she? Has enough time passed to heal what happened and to move forward? It’s a beautiful love song about reconnection and hoping for the chance to pick up with what they once had and leave the rest behind.