If you're thirteen 你 have no say in whether 或者 not your parents want to move...if 你 really want to keep your girlfriend make it long distance, if not break it off.
this sounds a lot like the situation i was in. my dad was making us 移动 across the country and my girlfriend begged me to stay. i tried convincing him to stay but it was no use. we kept a 6 月 long-distance relationship, but then she broke up with me because it was getting too complicatd. i came back to visit, but when i left she broke up with me again. if 你 really 爱情 her, keep a long distance relationship. until 你 can 移动 back and see her again.