My boyfriend won't propose!!?

I've been with the same guy for 5 years now. We live together, and even have a son together. We are living in a house that he purchased since our relationship, but yet he has yet to put a ring on my finger. I regret having had a child with him out of wedlock at this point(That doesn't mean I regret having our son...I love him to pieces!) I just wish I would have waited until after we were married. At this point I don't think he'll ever propose to me which is really disappointing since I do have religeous conviction over it. I may not have done things in the right order, but I want to make them right. He doesn't seem to mind or care however. He'd be happy never getting married. I don't know what to do. Not to mention, living like this I feel like I am investing in his future. I mean, I mainly am a stay at home mom and I homeschool, but every penny I do make (no matter how little) I put into "our" home...which isn't really ours. It needs fixed up so I paint it, redo the floorss...you name it. I just don't feel like he is taking my feelings into consideration at all.He did leave me under the impression that he was looking for marriage in the beginning of our relatiopnship, but now I'm left hanging. I do seriously contemplate walking away somtimes thinking it might be for my own good. What is your opinion? Please help!!!