Ambrose of Milan

"I opened to my beloved, but my beloved had gone." What is this going? Simply that he has penetrated into the center of the mind as it was said to Mary, "And his sword will pierce your soul." For the living Word of God, as piercing as a sharp sword, comprehends both the limits of bodily thoughts and the secret places of the heart.

Concerning Virginity 11:67 ↗

Gregory the Dialogist

Hence again she says: "My soul melted when the beloved spoke." For the mind of a person not seeking the form of its Creator is badly hardened, because it remains cold in itself. But if it has now begun to burn with desire to follow him whom it loves, melted by the fire of love it runs. It becomes anxious with desire, all things in the world that pleased grow worthless, there is nothing that delights outside the Creator, and things that formerly delighted the soul afterward become grievously burdensome. …

Forty Gospel Homilies, Homily 25 ↗

Bede

But he turned aside, etc. For this is what the Psalmist says: "Man approaches a deep heart, and God will be exalted" (Psalm 63). For the more the human heart, purified by faith and prayer, is lifted up to contemplate the glory of the divine vision, the more it finds what it seeks to be higher, and to which it should ascend at the time of the promised reward. Ecclesiastes is similar: "I have said, I will become wise; and it moved further away from me, and much more than it was" (Ecclesiastes 7). …

Commentary on the Song of Songs ↗