moving in?

So my boyfriend and I have been together for three years and he wants me to move in with him (2 hours away from my family and friends) whenever I graduate college in a few weeks.. which I have no issue with besides my own, personal morals which tell me not to move in with a guy without AT LEAST being engaged. Yes I've stayed weekends during the time we've been together and weeks at a time during my summers, but I'm nervous to move in, away from everyone and everything I know and be applying for "big girl" jobs. Does anyone have any suggestions besides just telling him to marry me? 😂