The lying wasn’t the sole issue, just the one that made me feel I had to step away. I have always been clear throughout our relationship that I want honesty above all else. He had a tendency to deal with his emotions in an unhealthy manner; giving me the silent treatment, refusing to acknowledge the issue, etc.
I guess I’m probably struggling so much because I don’t want to just give up. I’ve already set up an appointment for a therapist for myself, and I guess whether he follows suit is up to him.