"Why would I test him with something I know would make him really unhappy?"
Because it'll give you a damn good idea of what he'll be like once you're married/pregnant
It NEVER starts with hitting. It starts with what YOU are describing in an early, not even living near let alone together yet relationship.
It's breaking down YOUR boundaries, convincing you that it's reasonable (about respect).
All abusers are very charming, convincing, excellent debaters (can talk people round).
My mother went from a mini skirted, confident, fun, successful career woman to
a woman who didn't dare wear skirts at all, only wears crew necks, long hair (not her choice), sahm (not her choice), no friends, little contact with her family (she was 'allowed' one 30 minute call a week with her mother, one week a year to see her family).
This did not happen overnight. When they first started dating her family and friends liked him too, then gradually he'd say things like - you don't have the best legs for skirts love, that tops a bit low cut, are you going out without me AGAIN?!,
He didn't hit her until she was pregnant with me - a common trigger for control/emotional abuse to escalate to violence.
She's been battered, bruised, strangled, threatened, he's threatened us (the dc) (that if she left he'd track us down and kill us all).
He's now bedridden and still
She's not allowed to use the landline for anything but household admin
She only goes out once a week to do the food shop.
Please look at
How abuse starts
Cycle of abuse
I suspect as others do that you've started this thread because you KNOW it's wrong and dangerous and possibly people who care about you in real life have said so too.
If nobody in your real life knows - ask yourself why you haven't told them.
Embarrassed? Ashamed? Because they'll tell you to leave?