He kissed her forehead, "Lissy, I don't know if you will forgive me after knowing the whole truth. If I had known earlier, I would have told you the truth."
The reason John Fame didn't tell her was because he was afraid she wouldn't believe him, and he feared his unilateral feelings would be seen as wishful thinking. He was scared of being rejected by Lissy Lock.
That kind of feeling is too miserable.
He thought he knew her well, but he now realizes he didn't. Like him, she was also good at hiding her true feelings deep down.
Lissy Lock looked up into his eyes and said, "I don't even know if you truly love me. I'm afraid of falling too deep, that's why I wanted to escape from you as fast as I could."
He smiled, leaned down, and kissed her lips again.
John Fame took her hand and moved it to his neck, making her hold on firmly.