134 When Therese was fifteen, she could speak of Jesus as the one “whose heart beats in unison with my own”. Two years later, speaking of the image of Christ’s heart crowned with thorns, she wrote in a letter: “You know that I myself do not see the Sacred Heart as everyone else. I think that the Heart of my Spouse is mine alone, just as mine is his alone, and I speak to him then in the solitude of this delightful heart to heart, while waiting to contemplate him one day face to face”.
Source: Dilexit Nos (Vatican.va)