How do you begin to trust again after being cheated on or lied to?

Take small steps, find who you are and make sure to not sacrifice you and your values for anyone, it's okay to be nervous about trusting again, so take it little bit by little bit

Building trust again is a slow and very personal process. When someone destroys your trust, it is often difficult not only to regain trust for this specific person, but also towards all people in general. Often it is best to slowly open up to people and be honest with them that it is not difficult for you to develop trust, as well as surrounding yourself with people who understand your situation and do not push you to open up faster than you are comfortable with. It's also important to be patient and understanding with yourself and recognize your progress, however slow it is.