Don't know what to do... downhill relationship

Hi, TLNR: No sex, no kiss, no hug, no fun, nagging, boring, depressing. Thinking about my relationship makes me feel depressed. I don't think it will get better with time because it's going downhill for years and I feel she is emotionally detached from me. We are technically "engaged" but not married yet. We have been together for 10 years. I'm 31 and she's 30. We have one child that we love so much. We started dating 10 years ago. We met online. Sex was great until we moved together. At this point, sex was getting distant, from twice a week to once a week, once a month, once every three months and finally... once every six months. She never initiate it. I gave up on trying to initiate it because I'm getting rejected every time I try. In the first two years, she used to masturbate me and give oral sex just to please me. She had fun doing it. Now these goodies are gone for good. Sadly. When we have sex, it's plain old missionary. She doesn't want me to perform oral sex on her anymore. She also want to keep her bra when we are having sex. This was not the case before. Everything went downhill after we moved together. She is often mad at me, constantly nagging about everything. We argue everyday. When she come back from work, she's on her computer most of the time or watch tv. I, on the other side, try to be healthy by exercising and doing activities but she NEVER wants to do anything. If I schedule an activity with my friends, she complains and get mad at me for leaving her alone with our kid. She never wants to come with me. When I go outside, she rarely comes sit with me. She is so boring. I feel that I'm walking on eggshells all the time. I'm not scared of her, I just can't stand being in constant conflict with her and argue everyday, in front of our baby. There is no way to have a conversation about our relationship, she acts like a child, ignoring me and giving me the cold shoulder. She is always defensive as soon as I try to get to the subject. She's always negative about everything. I told her that she may be depressive but she denies it. One big part of the problem is that she tells me that I do nothing to help in the house. She wants me to do the dishes but WE HAVE A DISHWASHER! She doesn't want me to use it. What the f! Yes, I admit, she does a lot (laundry, cleaning, cooking) but I do everything outside of the house. I repair everything, fix this, build that, mowing, plowing. Appartently, it doesn't account for help. When she asks me to do something, I often forget things and she gets really mad. She also does not drink. She is not interested in travelling. She never see her friends. She don't want my friends to come over. She dislike most of my friends. She don't want to go to restaurants. Never do sports or activities. We haven't had sex since baby was born. She never initiates sex. She rarely look me in my eyes. We have no conversations, only small talk. She never kisses me, I always have to ask for it and it's always a dry kiss. She doesn't even hug me anymore. ^ Most of these points have been like this for at least 9 years... When I was younger, this is not what I thought having a girlfriend would be. I look at other women (girlfriends of friends, coworkers, random women) and I imagine them being my girlfriend. I get jealous over other people's relationships. They go out on vacation, spend family time, visit places, see their friends, have a drink, go to the restaurant, do sports and outdoor activities, make love. When I talk to other women, they look like fun persons. They smile, they laugh, they look me in the eyes when we talk and we have interesting conversations. At night, I often have dreams of having another girlfriend where things are passionate. And then I wake up... I don't want and will not cheat on her. I think I still love her... It depresses me that I'm trying so hard and I feel she is getting distant each day. I guess I'll be miserable until I'll be a old man... Sometimes I tell to myself that I should not have sent her a message on this online dating service 9 years ago... And I don't want to leave because I find myself dreaming that she could drastically change... and don't want to leave my kid.

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