1 Corinthians 13:1-1
13:1 If I speak in the tongues of mortals and of angels, but do not have love, I am a noisy gong or a clanging cymbal.
13:2 And if I have prophetic powers, and understand all mysteries and all knowledge, and if I have all faith, so as to remove mountains, but do not have love, I am nothing.
13:3 If I give away all my possessions, and if I hand over my body so that I may boast, but do not have love, I gain nothing.
13:4 Love is patient; love is kind; love is not envious or boastful or arrogant
13:5 or rude. It does not insist on its own way; it is not irritable or resentful;
13:6 it does not rejoice in wrongdoing, but rejoices in the truth.
13:7 It bears all things, believes all things, hopes all things, endures all things.
13:8 Love never ends. But as for prophecies, they will come to an end; as for tongues, they will cease; as for knowledge, it will come to an end.
13:9 For we know only in part, and we prophesy only in part;
13:10 but when the complete comes, the partial will come to an end.
13:11 When I was a child, I spoke like a child, I thought like a child, I reasoned like a child; when I became an adult, I put an end to childish ways.
13:12 For now we see in a mirror, dimly, but then we will see face to face. Now I know only in part; then I will know fully, even as I have been fully known.
13:13 And now faith, hope, and love abide, these three; and the greatest of these is love.
Paul is not talking about romance (despite all of the stupid weddings that use this) - or about any ordinary things. Not a human relationship manual. He is preaching theologically about how Christ's light can shine through us if we let it, and lead us to worship God and Christ and be changed by that from a gong to something else, something more Christ-like and less human.
