You're challenging a point I haven't made, and I agree with everything you've said. Single people absolutely are 'allowed' to feel that way.
But it's not relevant to OP, she's not a single person. She's talking about how her partner makes her feel. And as much as a person can validate themselves, it can't be discarded that a partner can invalidate them. And it looks like that's what's happened. @OutOfPetrol you are particularly sensitive to being loved and wanted exactly as you are, due to your past experiences, and that's fine. We are all what we are today due to our life experiences. But what you wanted was dismissed as a child, and now you dismiss for yourself what you want. Your partner has said something that has turned you right off. And that's fine, that's not because you're 'fucked up', that's because you have your own set of needs and he's crossed a boundary. This could happen to any of us, for example if our partner suddenly asked us to dress up like a school girl, I'm sure many of us would be turned off to the point that we'd feel we could never be turned back on by him, because it would reveal him to have incompatible desires, we'd wonder what he was thinking/picturing etc.
You're doing what CSA victims often do, and pathologising your feelings. But there's nothing wrong with them. Our feelings are the way our boundaries naturally express themselves, and you were conditioned to accept your boundaries being crossed. So, now, when you struggle to accept your boundaries being crossed, you think you're failing. But person you are failing is you. You weren't put on this planet with the intention that you would be happy to satisfy this particular man's every sexual will. You are absolutely allowed, and you absolutely must, if you want to be your own person and have relationships, to have your own feelings and to respond to them.
So, you can turn this around by understanding that what has happened is that he has said something that has turned you off. Nobody has to be 'right' or 'wrong', it doesn't have to be anybody's 'fault', and nobody needs to be regarded as 'fucked up'. Your partner has said something that has revealed to you that he sees things differently to you, and that he wants to do things that would make you feel bad. That could happen to anybody. Respect your feelings. This needs sorting out, or the relationship needs to end. Have you talked to him about how what he said made you feel? Can you see a way back, if you did talk to him and he had a particular response? If you want to stay together, you need to try to relate to one another, and come to an understanding about this. If you don't want to stay together, then you know what you have to do, and you're under no obligation to stay.
But whatever you do, listen to what the feelings are telling you. They are the voice of the little girl whose wants and needs were trampled on. She has been silenced all your life, firstly by your abuser(s) and now by you. It's time to let her speak, because she's your heart, and your boundaries. She's the real you, deep down, and she's upset that you're not listening to her. She will scream louder and louder until you feel like you're going mad, and if you start to listen to and respect her, she will calm down, you will feel like you make sense to yourself, and she will become your understanding of yourself, your likes/dislikes, and her voice will be the voice that tells you how to structure your life in a way that makes you truly happy.