When ending a casual dating relationship, it's important to be honest, clear, and respectful in your communication. Avoid ghosting or disappearing without explanation, as this can cause unnecessary hurt or confusion. Express your feelings calmly and kindly, and try to do it in person or over the phone rather than through text. Give the other person a chance to ask questions or express their thoughts, and try to part on good terms if possible. Remember that it's okay to prioritize your own well-being in these situations.