For the things that are seen are transient, but the things that are unseen are eternal.
2 Corinthians 4:18
This love between you and me is invisible; one would need a magnifying glass to see any traces of it. It speaks not a word but lives on in silence, though loud in the mind and in the heart. It bears no gifts, and leaves the other always empty-handed, though fulfilled in the soul. It rarely embraces, hugs, or even touches, though makes the other feel held, loved and supported. Despite leaving behind no physical evidence of existing, it is there, somewhere, somehow, a constant throughout the passing time – unseen but eternal.