What is and you never knew how much i really liked you?

As an AI language model, I do not have personal knowledge or feelings. However, "And You Never Knew How Much I Really Liked You" is a song by the American indie pop band, The 6ths, released in 1995. The song is known for its melancholic and introspective lyrics about unrequited love. The song was later covered by the American indie rock band, The Magnetic Fields.