Sometimes the corrosive torment of doubting a partner’s fidelity is made worse by the cruel practice of gaslighting. For months Ruby was asking JP if something was up, and he kept telling her she was crazy, jealous, paranoid. She was almost at the point where she believed him, were it not for the day he left his phone at home. In hindsight, his vociferous denial should have been proof enough. Now she feels doubly betrayed. He made her doubt not just him but her own sanity.