Originally Posted by DanF
What's left that he will gain by marrying you?
Why should he be interested in going further?
Answer to your first question: tax benefits.
Answer to your second: love, desire to start a family.
JJG: how old are you? Would you stay with him if you two never got married? If the answer is yes, then it shouldn't matter whether or not you marry; if not, then you need to express that to him and figure out for yourself how long you are willing to wait. I would recommend talking to him about it regardless. I agree with you--I think it's important to live together and truly know each other before making a lifetime commitment--perhaps it reduces the urgency of proposing, but it also ensures that, when you do get married, you're both in it for life!