shes my bestfriend of 3 years, and knows i have feelings for her, about 2 months ago she admitted to feeling mutually back, but they wernt enough to act on...
lately shes been talking to another guy which now has stopped.. buht it makes me wonder what i'm doing wrong... im the one she trusts and depends on, im the one all my close girl friends wish they're boyfriend could be like... she could have what they all wish they're boyfriend could give them.. why doesnt she want it, how can i make her relise us being together is the best thing and not the worst,
we arnt like normal bestfriends, we flirt a lot and im forever being approached by surrounding peers with their querys on how long we've been together, because it just looks like we are,
its hard for me i mean i wanna be more then what we are and i want her to want it to, i dont know what to do though :(

It's not that she doesn't want you two to get together, I think it's that she doesn't want you both to cross to that next step and then ruin your relationship. Yes, sometimes the best lovers started out as best friends, but this isn't always, and I guess she doesn't want to lose you and thinks that if anything happened with you guys, you could never go back to the way things used to be.