Since this is a beginner one for me we'll start it out simple.
Someone that you have known your whole life is beginning to have growth spurts and from the looks of it they're not stopping anytime soon.
1. Childhood friend
2. Sister (younger or older)
6. Someone else that you choose
Also sorry if the format comes out strange I'm doing this off my phone for right now. Have fun! Also mature stuff can be taken to notes.