ETA: Also, when the quote says "partner", bear in mind that the abuser might be the abused's parent, friend or boss, not only their SO.
The defining characteristic of any abusive relationship is one partner’s constant attempt to control the other, including her experience of her own subjective reality. The abuser dictates how she’s feeling (“Get off it, you’re not so sick, I had the same cold a few days ago and I was fine”) or what she’s thinking (“You don’t actually like those people, do you?”) and manages to imply, to make her believe, that she is the problem. If she would only get it together and start behaving like an adult, things would be great. The abused partner on some level knows that something is off, something is wrong, that she’s possibly even being destroyed, but she contorts her mind to believe what the abuser tells her. She disconnects her own instincts. He’s also telling her that he loves her, and if she starts paying attention to what her body truly knows – that she’s in pain, her partner is full of it – then her whole life comes crashing apart.
Taken from the following article about rape (so trigger warnings apply):
how not to be a ‘legitimate’ rape victim | Justine Musk (sic)