I Love You Because was written by Leon Payne but made popular by Jim Reeves. It is a very good love song.
But having found the pearl of great price, the Lord Jesus Christ, I now have perspective on real love and the limited value of the love of other people, even that of one's spouse.
The love of our Saviour is more intense, more sincere, more faithful and will never fail us.
If you have not experienced that love, come to Jesus and open your heart to Him. He will fill it with His Holy Spirit.