Either forgive her fully (for you, not for her) & start anew kayo. Or let yourself be free. Kasi hindi ka patatahimikin ng thoughts mo. And let’s be real - kung mahal ka, hindi gagawa ng intentional na makakasakit. As much as it hurt you, she was very much aware of her actions. You used the word caught. It’s basic to assume na had you not learned about it, hindi niya sasabihin. Pwedeng sweep under the rug & make bawi to you to lessen her guilt, but still without telling you.