"Okay, don't take this as a smart ass response and this is purely commenting.
I'm starting to think that being single is more simple to live then in a relationship.
Can someone tell me exactly what the perks are in a relationship? So far all I see is trouble.
Jero <--- starting to realize how fortunate he is being single"
Tell me something! You're so right! LOL!
The irony here is men try to second-guess women whilst women do the same. But the secret here is women keep it in their minds or share it with their close friends, whilst men openly expose their dismay. Of course I speak generally.

So, before you all speak of women like that, try to picture yourselves and how confused we are of you guys!
BlazingSaddles: "While we were best friends we would talk on the phone everyday and hang out every weekend, whether it was with a group or by ourselves."
Gosh! It almost sounds like you were with or around each other 24/7. Tip of the day, hon': Rushed relationships virtually
never work. Don't ask me to explain the interconnections.
"Finally, the past few days, she's been really ignoring me, every time I talk to her in school she is quiet and basically disagrees with everything I say."
Can't you just agree to always disagree with her or just switch your position?
Become a sophist if you aren't already one!

Hehehe!
"Her best friend (who i was very good friends w/ too) kept telling me I try too hard and to give her her space."
Hon', once that line is said, we know there's a problem. Give her a breathing space for God's sake. What's with you chasing her as though there's no tomorrow? When one has to tell her friend stuff like that you know there's a big problem.
"This week sometime, I want to make her come by my house after school so we can get everything out in the open and talk about everything. basically what is up with her."
Hon', you sound like a control freak . . . I say this with all due respect. I'm afraid you're trying to play a father's role instead of a friend's/bf's. What biz have you pushing it on with someone who's made it clear she does not wish to carry it on with you at the rate you're going? And that you would want to invite her to your own house for such purpose is kinda weird to me. . . .
"'maybe we shouldn't be together because i keep hurting you with these little things.'"
It sounds typically like the line a guy would be saying. So when you have a lady telling you that, we know there's an irrepairable problem amidst us.
"Point is, this is the most stubborn girl I have ever dealt with, I have other situations as evidence as well."
Hon', I'm afraid you are the one who's not being realistic here. You sound rather controling (or rather possessive) and when she does not submit to your authority, you call her stubborn. What's up with that? She's not the first lady to make such demands or draw such lines. I sure do draw them and know many ladies who do too.
"I thought it was different wiht us, but I guess not."
Keep dreaming, hon'. But when you wake up to reality, here's some stuff you seem to overlook: Did you note that you referred to up to three people as this lady's "best friend"? It seems to me this is a cycle and her nature. What made you think one who goes through a cycle of so-called "best friends" would make you an exception? You are simply having a taste of her nature which you chose to overlook in the past.
You know what makes this whole thing worse? Your so-called best friend sounds like a very confused lady. It seems she's either going through a phase of confusion within herself . . . personal internal battles of her own ot it's simply her nature. So, when you're all over her as though her world revolves around you, you are suffocating her and making her recovery much slower. She most certainly has relationship issues and can't seem to know how to maintain them.
Secondly, you have stated that she's had a history of what appears to be grudges she holds against people. That takes so much energy . . . so, why would you want to be around someone with such negative spirit? If you choose to remain close friends with her, then you must possess patience and give her space to let go of whatever lump of hurt feelings or grudges she has against you or even the "lack" of emotion she shows toward you.
Lastly, as far as I'm concerned, relationships with best friends is always a bad idea. The only good thing is that you can always amend things with each other if your relationship doesn't work. In other words, you can get back to close friendship, except of course on those instances where either party had engaged in an unforgiveable activity/conduct.
So, if you still want close friendship with her, you can have it. You just need to calm down and back off. Right now you come across as a control freak or as though you claim ownership to her (possessive, in other words). Give her space and give yourself space. Relax, get rid of those feelings, for you still seem to possess those feelings--despite your claim that you just want friendship. There's no way you can revert to best friends if you still have such feelings for her, which is not reciprocated.
Okay, I tell ya all of these with all due respect. I hope you accept my input simply as such (i.e., an opinion)!
P.S.:
"I ask her what happened and she was ilke I didn't feel like doing it."
This line was cracking me up.

You didn't make any advances at her, did you?
I'm messing with ya!

Hehehe!