The author expresses the pain and frustration of being someone's convenient option, always there but never truly chosen, highlighting the longing to be someone's first choice and the exhaustion of unreciprocated love.
The author expresses the agonizing, all-consuming nature of unrequited love, finding a strange beauty in the pain it brings while yearning for reciprocation.
The experience of having a crush who is already in a happy relationship evokes a complex mix of happiness for their well-being and sadness for the unrealized possibility of a relationship.