A/N: Guys I'm so shooooooooooooooooooooort
Jin
I think Jin wouldn't mind his girlfriend being short, he would look quite tough next to her and he would probably enjoy it. There would be constant reminders how cute you are because of your height.
Suga
Since Yoongi isn't tall he would love to have a shortie for a girlfriend. He would feel manly and much better about his height when you are around as your height make him look taller. When he is in the mood to tease, he would start with the fact that you're short completely ignoring the fact that he isn't on the tall side too.
J-Hope
Hobi will find you really cute, being so tiny and short next to him. He will tease you from time to time about it. Watching you jump around, trying to reach something would be great fun for him.
RM
Namjoon has mentioned a few times that he wants a tall girlfriend, but I don't think that your height would be a problem for him. He would enjoy picking things for you when you can't reach them and the thought that you look so small next to him would make him smile instantly.
Jimin
Just like Suga, Jimin would enjoy having a short girlfriend to the fullest. Having you next to him would make him feel really confident and manly, appreciating the fact that you make him look taller. He may tease, but it would be unintentionally, because he knows well that he isn't tall too.
V
V wouldn't mind having a short girlfriend, but oooh girl, he would tease you non stop. He would put things that you need as high as possible just to look at you jump, trying to reach them. He would have so much fun watching you struggle and when you give up, he would come to you and take it, patting your head as he laughs.
Jungkook
Just like V, he would tease you a lot, but he would definitely not mind having a short girlfriend either. This would be some kind of an ego boost for him. Everytime he sees you walking around, he will smile, thinking how sweet you look.