Meaning of "Heartstrong" by Silvertide

The lyrics of "Heartstrong" delve into the complexity of a failing relationship where one party is holding on to hope despite the clear signs of a deteriorating connection. The protagonist is left feeling confused and lost as the other person tries to come back but struggles due to their past actions and flaws. There is a sense of longing and heartache as the protagonist grapples with the idea of letting go but finds it difficult to do so. The repeated refrain of being "heartstrong" represents a facade of strength put up to mask the vulnerability and pain felt inside. Ultimately, the song captures the struggle of holding on to a relationship that has become toxic and one-sided, despite the pain it causes.