Answer
This is a very difficult question to answer as you must realize. However if the two of you are close, because you call him a guy friend I can only assume that you both communicate through emails. Why not come right out and ask him. You have nothing to loose and everything to gain.
First how close are you to her if your really close one day ask her IF you are NOT close get to know her a little better then ask.
you tell them that "i understand it is up to you but i do really really wanna be your friend still" and that's it
Talk to your friend and tell her how you feel about her brother, and ask for her advice and/or permission (to be nice). Also talk to her bro and see how he feels towards you.
call your mum or dad, or a really close friend and have a chat
Not really, more like a close best friend.
A Really close friend of Lottie and fizzy.
if there close to you know lots about you and are willing to keep secrets
Then talk to her about it. You could be close to him, but don't do anything crazy. You know the friend code.
He leans his face towards yours and gets really close.
yes! because their best friend
Yup he have 3 best friends
Some cool ideas can be a great wallpaper. Some shoes. CD's. Cool wallpapers. Jewelry. Or even a simple card. If your friend is really close any of these things could be really special but it all depends on who your friend is.