This succinct statement carries a profound message about the enduring nature of certain emotions. It suggests that the feelings which return were always present, even if they seemed to have faded or disappeared for a while.
The phrase "Feeling that come back" indicates a resurgence of emotions or sentiments that the speaker may have experienced before. It implies that these feelings have a way of reemerging in one's heart.
The assertion "are feelings that never left" underscores the idea that these emotions were never truly gone but were merely dormant or hidden temporarily. It speaks to the enduring and resilient nature of certain emotional connections and experiences, emphasizing that they can resurface and persist over time.