I can really relate to this at the moment. Recently, someone lied to me about something that was important to me at the time, so I decided to stop talking to her. Since then, I've been focusing on school and my physical/mental health, and have been much happier since not interacting with her. But yesterday, I had the urge to message her (but didn't), and even had a dream where I confronted her about the situation. Just gotta keep staying focused, I guess.