want to be single

I am a 22 year old expecting mom and lately I want to be single. my boyfriend and I have been together 2 years he has been faithful he treats me better than any one else but my problem is he doesn't want to work he will not stay on a job there is nothing wrong with him and he is trying to get a disability check playing mentally insane. our baby due in May and I need his help he will not work he is used to having everything handed to him. I need a responsible man not a boy. I provide housing. food. etc and I thought us having a baby would motivate him still nonthing changed my dad tried explaining to him the importance of providing and how it looks bad that nhes not contributing to his family. I often feel like I have to monitor him this past weekend he actually stole a display car seat for our baby and it frustrates me because it doesn't have to be this way. I love him I love the time invested but I want to be alone I been taking care of him too long now and I need a change but I feel like starting over with me being pregnant would be hard I feel no man would want me