What should i do?

Step outside of the situation and try to see it from his perspective as best you can. While you think that the steady progression should mean moving in after the length of time y'all have been together it might or might not just feel maybe overwhelming when the next person realizes just how much of a commitment that would mean. Think about it, when you move in together especially when you're still dating, then that officially closes off some chances of that person meeting anybody else because they have a live in partner. You shouldn't expect someone to make a marital commitment to you like that unless they are really ready because noone likes to feel like they were pressured into anything so give that person the chance to own that decision. If you're starting to feel like it's taking too long ask yourself why you're in such a rush.....is it because you have insecurities within yourself or are you afraid to be in love again just to lose it again as you did your first husband?

Talk to him................................... it isn't THAT hard.

I cannot for the life of me understand why any man would not want to raise another man's kid. It just confuses me. And the fact that women ALWAYS take their kid's side over a man (especially when he's not the biological father) and the fact that 95% of stepkids don't really care for if not outright hate their step-parents, who wouldn't wanna sign up for that? What a great deal.

give him his space, hurtful as it is to you.
dont put soooo much into a guy or this will be a constant feeling for you.
people come and people go, that is life, learn to stand for yourself.

i know it hurts but give him space dear. if he's not the one someone will come along. it sounds like your ready to start over, if he's not the one there are others out there. being a step-parent isn't bad, i'm one and my step-son loves me. contrarily, my son hates his step-dad. (we were never legally married but he was my common law hubby)