This statement alludes to the moment when someone discovers their life partner or the person they want to spend the rest of their life with:
The speaker is likely referring to the profound and special feeling that comes with finding a soulmate or a long-term partner.
"When you finally find your forever person": This phrase conveys the idea of discovering a romantic partner with whom one envisions spending a lifetime of love and companionship.
In essence, this quote celebrates the joy and fulfillment that can come from finding a deep and lasting romantic connection. It's a sentiment that resonates with those who have experienced the profound bond of a loving relationship and have found their "forever person" with whom they want to share their journey through life.