โกหกแฟนในความสัมพันธ์ทางไกล

I've been with my girlfriend for a long time. She lied to me. She went to the resort in Chiang Rai for 4 days and lied to me. When asked about her, she said she didn't want me to worry about it, so she lied. She didn't tell me who she was with. But she said she didn't deceive me. She also hides Facebook posts from me. I lost my faith. I want to break up with her But she cried and said she never cheated on me. What should I do? I lost my peace of mind