Is it okay that I want to leave my boyfriend because he refuses to go vegan?
Is there anything you can do to convince him?
I think he is set in his ways and won't want to change.
It is rude to expect someone to change the things they want to eat because you decided to change your diet. Couples make compromises all the time and can usually work through problems.
We won't work as a couple. I'm going to break up with him now.
You might want to give him another chance before you end things. But if you're sure that you can't fix this, then it's better to move on now than to drag things out.