in a relationship once someone hits u, it's over. never forgive even a single incident. it is guaranteed to happen again and again and only get worse.
this will be hard to implement in the moment, there will always be mitigating circumstances and they will always be sorry and promise it will never happen again. still u must hold this clear bright line. propensity for violence doesnt change.
and yes women can be just as physically abusive as men, they're just less likely to put them in the hospital. if a bitch slaps u it's not "ok bc she's a woman". leave, find someone better.
(obviously consensual bdsm is not abuse)