In this quote, when someone says, "I love you as big as the sky," they are expressing the vastness and boundless nature of their love. It's like saying their love is as immense as the entire sky. The sky is huge and seems to go on forever, just like the depth of their affection. This means the person's love knows no limits; it's unconditional and all-encompassing.
Furthermore, comparing love to the sky also suggests that their feelings are constant and enduring. Just as the sky is always there, day and night, their love remains steadfast and unwavering. It doesn't change with time or circumstances; it's as consistent as the sky above.
In summary, when someone uses the phrase, "I love you as big as the sky," they are conveying the idea of limitless, unchanging, and all-encompassing love. It's a beautiful way to express the depth of their feelings in a simple and heartfelt manner.