Yes. At the start of last year, I was in a relationship that had been unhappy for over a year, together 2.5 years in total. I'd tried speaking to him about issues calmy, writing them down, everything etc, but he refused to accept there were any issues, would just get defensive and shut down, saying only "OK", "Yup" "Right" when I tried to have a discussion about it, and basically wanted to sweep the issues under the rug and pretend they didn't exist. On top of that, he did things that I found disrespectful, like discussing personal sexual fantasies with a female friend amongst other things (whilst our sex life was non existant and he effectively banned me from saying or talking about anything sexual at all - one of the biggest issues.)

I was miserable, I felt constantly anxious and on edge, had no appetite and stomach/headaches constantly. I felt like I was just waiting for the next time he let me down/disrespected me, because that's how frequently he was. His refusal to try to work through our problems was the main crux of the matter, and instead carrying on as before. It wasn't always like that, the first year he was sweet, kind, respectful, affectionate etc, but he just wouldn't admit or open up why it'd changed.

Eventually I realised that although breaking up with him would hurt me, it couldn't be anymore painful than living like this day to day. It was painful for a couple months afterwards but I knew I'd done the right thing, especially when he wrote me a letter, effectively explaining as all his bad behaviours as my fault.

Now I'm single and happier, I felt constantly alone, anxious and upset for the last year of that relationship, at least now I'm not being constantly disappointed/ignored/waiting for the latest upset. It's made me grow as a person, whereas the last year of the relationship, I was having to suppress myself and my needs to keep him. It's not worth it.