This quote celebrates the rarity of finding someone who wholeheartedly accepts and embraces your idiosyncrasies. In the first part, "you are lucky if you found a person," it highlights the significance of discovering such a unique individual, implying that it's a fortunate and valuable experience.
The phrase, "never gets tired of understanding your nonsense," underscores the depth of the connection. It suggests that this person not only tolerates but actively seeks to comprehend and empathize with your quirks, even when they might not make much sense to others.
In essence, this quote recognizes the preciousness of a relationship where you can be authentically yourself without fear of judgment. It conveys the idea that finding someone who appreciates and empathizes with your "nonsense" is a rare and precious treasure worth cherishing.