This quote beautifully expresses the profound significance of someone in the speaker's life. It conveys that the person is not just a part but the entirety of what's most important to them.
The phrase "You're nothing short of my everything" emphasizes that the individual holds a central and irreplaceable role in the speaker's heart and life.
In essence, this quote is a declaration of the immense love and value that the speaker places on their partner. It communicates the idea that the person is everything they've ever wanted or needed, and they wouldn't have it any other way. It celebrates the depth of their connection and the completeness they find in each other.