You can have a funny but not sure who the mod is but....Take a spare w.a.n.k sock, by the time you've been posted to your first unit - your current G/F will be history and you'll be needing that sock you packed with you.
On the bright side, you'll probably get posted to a garrison town, where all the fat ugly munters visit the local pub nightclub and think they are 500% better looking than they actually are - due to the fact that squaddies will bang anything that moves. You'll most likely have an average looking plain Jane girlfriend (from back home) in 5 years time, that has slight mental issues, then decide to leave the Army because you're bored out of your tits, and some lawyer wants to sue you because you upset a civvie while carrying out your job. You current G/F will be married to someone new, have a good job and will have started a family. Welcome to real life buddy!