"Heart to Heart" by Mac DeMarco seems to be a nostalgic reflection on a past relationship. The lyrics suggest that the singer and his former partner spent significant time together, but also apart, which might have affected their connection. The repeated phrase "heart to heart" could symbolize deep, intimate conversations or emotional connections they had. However, the line "so I had a late arrival, so we never saw the start" implies that they might have missed out on fully understanding each other from the beginning. The song also hints at regret with lines like "know it seems so quick and easy," suggesting that perhaps things ended abruptly or were taken for granted. Overall, it's a melancholic look back at what once was and what could have been in a relationship.