Needing advice on long term relationship/marriage

I have been dating my bf for a year now (we live in separate homes). My bf has been married before and has 2 kids 16 and 21 who live with his ex out of town. He went through a very messy divorce financially and emotionally. I on the other hand, have never been married and have no children. I have always wanted marriage and a family (though the kid thing is out of the question since I'm 53 now). Shortly after we met he wanted me to move in with him but, I told him that I wouldn't unless we were engaged. We spoke about marriage every now and then and he never seemed opposed to it. He constantly tells me that he has waited his whole life for me and that he wants to spend the rest of his life with me. We have almost a perfect relationship and really haven't fought about anything major. We have similar interests and always have a blast with each other. My family and friends love him and his family and friends love me. Last week we were at a party and unfortunately someone overheard saying that he never wanted to get married again.... "been there, done that" were his exact words. I confronted him on it and he said that he had every intention of marrying me until he spoke to his lawyer. He wanted to draw up a prenup but the lawyer told him that in the state of CA they don't always hold up in court. He has worked hard his whole life and makes a nice living so he is afraid that he will lose everything if we get divorced. Since I have never been married I really want to have the comfort of being bound legally. Call me old school, but I really believe in the sanction of marriage. It's not his money that I'm after but I do want some sort of security. He on the other hand just wants me to live with him without being married. My question is do I walk out of a wonderful relationship and hope to find someone who wants to married me or do I stay with my boyfriend in a non-committed relationship? Is there a happy median?

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