This girl that i've known for about 4 years is really hot and really cool. I know you here 4 years and think its way too late, but its a little more detailed. She has never actually referred to me as a friend. recently, she has been a lot more physical with me, and gets jealous whenever i talk about another girl or text another girl.

I know this might sound really stupid, but i feel like she wants to be more, but cant take the risk of losing everything and making it weird. i also dont want to risk it either without at least a game plan.

Basically, do you guys have any advice on whether or not to proceed? and if i should proceed in getting her, how should i go about dong that?

Go on bro, its never too late. Just go on with your usual game.