Abusive men are like chameleons, you never know whether you are going or coming with them. They can be sweet one moment and violent the next. When a partner hits you, no matter how remorseful they are afterwards just know that it won’t be the last time he hits you.
Accept his apology but do not remain in the same situation where he can do it again. If he has no control of over his anger that is a red flag that you shouldn’t stay. The moment he strikes you is the moment you need to leave. Don’t give an abusive partner a second chance; just go.