The quote expresses a profound sentiment about love that goes beyond the conventional duration of a relationship. The speaker acknowledges that while the person may not be the love of their entire life, they are, in fact, the love that constitutes their very existence. This indicates a deeper, more enduring emotional connection, suggesting that the relationship holds a fundamental significance in the speaker's life.

By using the term "love of my existence," the speaker conveys a sense of timelessness and commitment, emphasizing that the love shared is meant to transcend mere moments. It reflects an understanding that true love is a lasting force that shapes one’s being and identity. This notion reinforces the idea that love is not just a fleeting feeling but a vital part of life that enriches one's soul.