Marriage / moving together

Hi, I have been with my girlfriend for a year and a half now, and I would like to move with her. The thing is, she wants to wait until marriage before we move together. In other words, i want to move with her before marriage, she wants to get married before moving together! And i don't feel ready for marriage yet, mostly not if we are not even living together. We talked about it many times before, never found a solution. Please help?