Why does it always seem like I am doing wrong VENTING!!!

I am a divorced mother of a 3 1/2 yr old girl. I live in NJ and her father went weeping all the way to FL because he did not want to see me and my boyfriend when he dropped off his daughter.
That has to be the best reason out there to leave your daughter.
I have been with my boyfriend for about 2 years and it has been the bumpiest ride I have ever been on. But in between those nasty bumps has been alot of smooth sailing if that makes any sense. It just seems like no matter what I do in this relationship it is never right. He is always saying I don't communicate enough, I don't spend enough time with him, you don't care about me and what I do, you I don't spend enough time with my daughter, we don't have sex like we used to........you get the picture. Like for example he blows up on me because I went to a meeting on Monday and he was so kind to stay home and watch my daughter....so when I got home I was exhausted he asked me how it went I told him and got ready for bed.......he was insulted because I did not ask what he did....if his friend came over.....etc. Really!!! I have a horrible way of thinking if I already know the answer I don't bother asking. I know what you did...the friend never came by because the house was still a mess (he will not allow anyone in when it is messy), he probably did some computer work, and he played around with his guitar, my daughetr was bad it is the same friggin thing all the time. I was tired, it was midnight and the only thing I was interested in was my bed.
As far as communication when I do ask him about what he did or what are you working on he response with you wouldn't understand it anyway. So when I do reach out he blows me off. Your right I probably won't understand it because I am computer technolgy retarded, but I will listen anyway because I am your girlfriend. So I stopped asking him. Again why ask if I already know the answer.
Then he doesn't understand why I get angry with my life. I make a shitty paycheck but I stay at the job because I work from home, so I save in clothes, travel and extra expenses you have with going to work ( I bow down to all you women who do ). I started my own jewelry company which takes a lot of time and patience to get it out to everyone, and I have my little girl who i even know suffers because I am trying my best to make ends meet. Most of the time I am so angry with myself because of the shitty choses. He wants that women he met years ago YEAH well she is stuck under a mountain of debt partially that is his and under a huge basket of dirty laundry LOL! I know this doesn't make sense to all you. I just needed to Vent because I do not have anyone to talk to. Friends I lost in the divorce