Re: trusting boyfriend
Men are programmed to spread their seed around. So now that he accomplished that with you, he has lost interest and his eye is wandering in every other possible direction. Yeah, they all seem dreamy at first. Why didn't they two of you get married? Well, considering how things are going now, it is probably better that you didn't.
I don't know if there is any way to get your boyfriend to be interested in you again. It sounds like you started a family without first actually being a family. He obviously is not very devoted to you. And is preoccupied now with laying other women. That won't go away. He MAY love you, but he doesn't lust after you anymore. His hormones are steering him in all kinds of other directions. It is not fair to you, but that is how it is.
I'd get out with your child, get your child support from the father, and thrive on your own. But if you want to stay with him, then you will just have to deal with the fact that he does not find you attractive or sexually appealing anymore. I am not saying that you aren't attractive. But it is clear that he was not ready to be a father, and doesn't look at you the same way now that you're a mother. That is too bad, but you are going to have to lay down the law here. I know it's hard to look at the facts, but don't hurt yourself by being willfully naive.