don't know what to expect ...

I know I'm not an army wife just a young girl that's a little scared, So my boyfriend of a year is joining the British army. He leaves in October which is a whole off but I don't know what to expect I've tried researching more about it I'm scared about how lonely I will be, I don't want to sound selfish as I know he will have it harder but I'm only young and don't really have a lot of friends or family to talk to anyone out there with significant others in the British army ?