This is a very sweet love song. In the beginning, the singer is emphasizing on the fact that nothing lasts forever. Everything has a certain life after which it finishes. But Luke's love with his lover can never finish. Love is a very powerful emotion. It has the power to overcome all the obstacles and make the impossible possible. This song is perfect representation of this phenomenon. The singer is so confident and sure of his love, he is willing to claim that it will last forever and always.