I want to go to the marines but i also want to marry my girlfriend?

ive been going out with my girlfriend for about three years and i want to go to the marinesbut i also want to marry her. i want to know if she can move on base with me if we are married and how long it will take. after bootcamp and mos for sure but how long after that can i apply already so when i get out of mos she can live with me or no? i know i shouldnt rush into marriage and stuff but i know i want to spend the rest of my life with her and i know i cannot be away from her too long! should i reconsider my options and not go?? i need help.