I am afraid my experience wasn't very positive @whonoes. After 20 odd years of being ignored and manipulated I decided enough was enough and got out. By that stage my self esteem was shot to pieces and I have been in therapy since to repair the damage. He suddenly decided that he wanted to go to couples therapy but manipulated the whole thing in his favour. When I told him I wanted a divorce, he didn't say a word, left the house and handed me a letter the next time I saw him. It was full of complete mental nonsense, nothing about losing me, feelings etc.
My marriage was emotionally abusive for the following reasons:
He saw me as the problem and convinced me that wanted intimacy and connection with your partner was 'wrong' so I carried the blame for all those years which prevented me leaving sooner.
I was housekeeper, cook, childcare etc like something out the 1950s because such things were beneath him. I had to fight to share finances and then realised once the marriage was over he completely lied about his income. He also lied about assets in the divorce.
His arrogance was phenomenal. He didn't greet people who came to the house or bother to interact with others on social occasions unless he felt like it. A lot of people didn't like him which was isolating for me.
He kept me in my place using passive-aggression. You never quite knew where you were with him. He would make agreements then do as he wanted. He had absolutely no respect for my feelings or anything I wanted. If he didn't want it, it didn't happen yet to the outside world he was Mr Nice Guy. He did some absolutely crazy things to 'get back' at me.
Any attempts to resolve conflict were dealt with by stonewalling and disappearing. Another method to get his own way.
I raised our child single handedly whilst he over-indulged his hobbies. He couldn't bare to be in the same house as us and had umpteen excuses to disappear off. He barely knew our daughter when we split up and had no compulsion about dropping her when he met a new victim to 'lodge' with. He used her for company until that point.
He wouldn't walk next to me when we were out. Had to be yards ahead, walking fast so you couldn't catch up.
Getting rid of him is the best decision I ever made and I am now with someone who is securely attached and the difference is astonishing. It has never been easier being with someone who is open with his feelings from the beginning, is keen to resolve any conflicts and has nothing to hide.
Sorry OP but these types are misery makers. You won't change them without a lot of therapy so in answer to your question you don't get your needs met because they are happy keeping you at arms length which meets their needs for distance. You don't get to express dissatisfaction because they really don't care about your feelings. That was my experience. I really hope you have a better experience.