Tutu

“Just because something isn't a lie does not mean that it isn't deceptive. A liar knows that he is a liar, but one who speaks mere portions of truth in order to deceive is a craftsman of destruction.”
― Criss Jami

“There is beauty in truth, even if it's painful. Those who lie, twist life so that it looks tasty to the lazy, brilliant to the ignorant, and powerful to the weak. But lies only strengthen our defects. They don't teach anything, help anything, fix anything or cure anything. Nor do they develop one's character, one's mind, one's heart or one's soul.”
― José N. Harris

“Reality Check
His lying is not contigent on who you are or what you do. His lying is not your fault. Lying is his choice and his problem, and if he makes that choice with you, he will make it with any other woman he’s with. That doesn’t mean you’re an angel and he’s the devil. It does mean that if he doesn’t like certain things about you, he has many ways to address them besides lying. If there are sexual problems between you, there are many resources available to help you. Nothing can change until you hold him responsible and accountable for lying and stop blaming yourself.

The lies we tell ourselves to keep from seeing the truth about our lovers don’t feel like lies. They feel comfortable, familiar, and true. We repeat them like a mantra and cling to them like security blankets, hoping to calm ourselves and regain our sense that the world works the way we believe it ought to.
Self-lies are false friends we look to for comfort and protection—and for a short time they may make us feel better. But we can only keep the truth at bay for so long. Our self-lies can’t erase his lies, and as we’ll see, the longer we try to pretend they can, the more we deepen the hurt.”
― Susan Forward

“Love is a verb, not a noun. It is active. Love is not just feelings of passion and romance. It is behavior. If a man lies to you, he is behaving badly and unlovingly toward you. He is disrespecting you and your relationship. The words “I love you” are not enough to make up for that. Don’t kid yourself that they are.”
― Susan Forward, When Your Lover Is a Liar: Healing the Wounds of Deception and Betrayal