The phrase "I love you to the moon and never back" is a variation of the commonly used expression "I love you to the moon and back." The phrase is often used to express an intense and boundless love for someone. It conveys that the person's love is so vast and infinite that it extends all the way to the moon and back again, emphasizing the depth and magnitude of their feelings.
In the context of "never back," it could be a playful or poetic twist on the original expression, adding an element of permanence or immensity to the love being expressed. It suggests that the love is not only immense but also unwavering and everlasting, with no end in sight.
Overall, the phrase is a way of conveying a profound and enduring love for someone, emphasizing the strong emotional connection and commitment the speaker feels towards the person they are addressing.