Generally rapists don’t get suicidally depressed about the victim not wanting to see them.

Doesn't know much about the psychology of abusive relationships, does he?

And on the main subject... you don't need a safeword to know to not anally fuck your girlfriend if she told you beforehand that she won't do anal, ever. (Because even and especially in BDSM, there is this thing called "hard limits", you know?) Nor do you need a safeword to know to stop when said girlfriend starts bleeding profusely. That is, if you aren't a jackass rapist.