Welcome to PheromoneTalk, davidlogan!
You see, love is a big risk. No one ever gained the girl they like without risking something.
You, are risking your friendship, which is a major concern for some. 
I have to tell you that since pheromones does not change a person’s will, there is a chance you might lose, and that is part of the risk you must be aware of.
If she does have a hidden feeling for you, pheromones may help enhancing it, making her consider new ways of viewing you. Otherwise, she will consistently friendzone you.
Now, a combination of pheromone use and your actions might really help to unconsciously convince her to take a look at you as a prospect.
But you need a lot of patience, since this will involve a lot of build up, lot of subtle teasing, flirting in a safe distance, all ways to test the water and find out what will her reactions be.
So I will heed the recommendations above, but will advice you not to step your right foot further than your balance can take. This is a slow dance. A slow hunt. And it will not worry you because you are past her first line of defenses being her bestfriend.
Do not use TUTH or any sexuals at this stage for it will bring doom to your plan and might affect your friendship.
Wear AMMO + IShine around her while being extra caring, extra sweet, but not to a point of being too obvious… leave something for her to think about.
IOpeness and IHonesty is a useful combo too during light convo. It will help deepen the rapport. Just make the AMMO present for the attractive vibe. And since we are selling stealth now, you can get AMMO in regular frgarance, and the other mixes in stealth.
Check out too the journal of GMoney. He’s in your age bracket and seems to be getting some good results in his tests. You might consider trying out his combos, and of course, creating a journal too. 
Your GC is now in your email. 
Happy Pheroing! 