Abuse and threaten
Remember this, no matter how nice a partner is, if they’re abusive, verbally or physically, they’re not worth being with. Is it time to break up if an abusive streak shows up? Definitely.
Never look at that as “just one little bad habit”. You wouldn’t say the same thing the day your dinner gets poisoned or when your partner gives you a black eye, would you?
Do not be mistaken into thinking that you can change the person. Many abusers will not change however many times they fall into your lap crying and begging for forgiveness. If you threaten to leave but then receive a marriage proposal or an expensive gift, do not be fooled. A person who is willing to abuse you before marriage will not hesitate to do so after they have slipped the ring on your finger. At least if you leave now, you can avoid the trauma of an abusive marriage and a potentially nasty divorce.