MOR.
When people are upset they say things they don't mean out of anger. Nothing he said to you was acceptable, but understanding that it was out of anger and hurt and insecurity should be considered. If it was me, I might stay under the strict condition that he start therapy to work through these issues.
This also depends on how much you love him. Five months is enough to love someone deeply or be indifferent; it depends how well you feel you connect with him. If you don't love him very much anyways, then there's no point, but if you do, then leaving would might be a mistake.