If he does want to get married eventually, and can say that right now he believes it will be to you, but he just isn't ready yet then I think you should give him some time.
I went through a similar situation that might help. We had been dating less than a year when I moved from AZ to IN to be with him. We moved in together. We talked prior to my move and he did want marriage in the future but as he had been married before he wasn't sure his timeline and when he'd be ready to take that leap again. After living here for 2 years and dating for nearly 3 years I was getting itchy. (I should mention I was 34 at this time) I sat down with him and basically said:
I love you. I know I want to be with you. But I also know that I want to get married. We have been together for 3 years, I moved here for you. You told me you would want to get married again yet in those three years nothing has changed. I need to know if you see yourself marrying ME. Because at this point, if you aren't sure that I am the one then I don't think you ever will be and I need to move on and find someone who does think I'm the one and who DOES want to marry me. If you can honestly say that I am it, you do see yourself marrying me, and you just need more time to get to that place then I will wait it out. But I need to know if you are sure about us.
I didn't want to throw in the towel with the man I loved simply because his timeline didn't match mine. He said that he loved me and did tell me he felt I would be his wife when he was ready. I accepted that and stayed. I made the decision that I would rather be with him without the ring then without him.
He asked me to go ring shopping about 5-6 months later and we got engaged a few months after that.
Sooooo..............I guess what I'm getting at is finding out his feelings about YOU is what's really important. Can he see you as a part of that future? Based on your discussions it sounds like he can. But only you can decide if you want to wait around for a man you love and have a great relationship with or if you want to listen to your biological clock. Just remember........if you consider the amount of time to find someone else, feel that click again, and get to the engagement you are probably looking at 2 years of dating and getting to that point with someone else.