But, it was retorted, if human love craves oneness, shall not divine love? If husband and wife seek to be one in the flesh, shall not the Christian and Christ crave for that oneness with one another? The memory of the Christ who lived twenty centuries ago, the recalling of His mercy and miracles through memory, the correspondence with Him by reading the Scriptures–all these are satisfying, but they do not satisfy love. There must be, on the level of grace, something unitive with divine love. Every heart seeks a happiness outside it, and since perfect love is God, then the heart of man and the heart of Christ must, in some way, fuse… This aspiration of the soul for its ecstasy is fulfilled in the Sacrament of the Eucharist.
Source: Ven. Fulton Sheen, These are the Sacraments