I was in a very similar situation, years ago, when I was much younger. I was in my late teens / early twenties, he was my first “proper” boyfriend.. the first guy I ever had sex with.. we ended up living together at my parents house.
It took my years to come to terms with what happened in that relationship, and to label it for what it was .. it was abusive and controlling, and I now accept that what happened to me was rape.
He would do the same ... just push, and mither me until I let him do it. I was say “no” repeatedly, say I was tired, try to sleep.. but he would put his hands in my pants, or remove my clothes, and keep on telling me that “I was being unfair” and that ‘he had needs to”. He would go on and on, until I just gave up saying no. He was quite well endowed as well, so it could often end up being really painful.. I remember one time being face down on the carpet, and him being behind he, and just sobbing into the carpet because it was so painful. He never stopped though, regardless of how much pain I was in, or if I was crying, or asked him to stop (he was normally just say he would be quick).
He was controlling in other ways as well, telling my nobody else would want me - and all that usual baloney.
That was all 27 years ago, and it took ages to understand that what he did was rape. I think it awful that people think that what happened to OP wasn’t ... as he wasn’t a stranger, or she didn’t have a physical fight with him. I don’t think rape in relationships is understood, it forms part of an abusive pattern, along with the name calling, and the controlling.