Is it ok to break up over bad hygiene?

I obviously didn’t know until we moved in together but he rarely brushed his teeth. I’ve said something and he told me I forgets but will work on it. He also told me he keeps a toothbrush and bottle of water in his car to rush when the gunk off his teeth when he thinks about it. I just find that disgusting. Like what about toothpaste?! After I said something he brushed his teeth at night (not in the morning just at night) for the next few days and then quit again. I’m so disgusted and really debating breaking up with him. Am I wrong?