My "bestfriend" likes the guy ive been liking for 3 years and he likes her back..should i be mad!/?

ok, KNOWING ive been head over heels for this one guy for three friken years, you know my so called "best friend" just lies to me and says"ya i don't like him"so than all of us get home from the mall i get a text from the guy ive been crushing on saying do u wanna go out with me? i obviously say yes and than i get a text from my best friend saying your welcome:) i assume she forced him into asking me out so i say u don't like me do u he said no i dint like u so we broke up and than the next day ok so i have pretty much gotten over this little situation but then..so i get a text the next Morning get another text from the guy saying "would you care if i went out with theresia? "(my"best friend") i say "why would i care do whatever you want...im not going to control your life bud"...so than i get a text from theresia saying "would you care if i went out with ***?" i said honestly you know how much i like him but i don't care wat u do ur just not a true friend (remember she lies all the time about liking him and any other guy we get into a fight about!)so than she says i didn't say i was going to go out with him im just asking ..which is total BS!! she is a whore! she hugs every guy and likes every guy knowing she cant get them!!!!!!!shes a lier and im just done with it! she lied to me about liking this kid i thought best friends r supposed to be honest with each other! im not mad about the fact they like each other its just the fact that she lied to me again about the same thing when last time i told her to come out with it not to lie, just tell me i wont get mad so honestly i feel dumb Cause she told me she didn't like him like 40 times and i believed it so than she wants to go out with him now?? wtf dude!! shes just right now pissing me off she gets mad when i like the guy she likes why cant i get mad when she likes the guys i like??so one time there was this kid eric and we both liked him so theresia liked him nd i tell myself ok maybe i should just keep it a secret that i like him so she can have him u know being a good friend so i go to basketball practice i get back nd have a text from theresia saying eric likes u i said o well thats cool...she goes i hate u! i said its not my fault he likes me theresia! she says do u like him...i say to be honest yes i have liked him for a little bit now i mean im not going to lie to u im a true friend....she goes wow dude just wow and i said don't bother telling eric i like him i dont want to date him you can have him im not going to fight over a guy with u and she just flips nd we don't Talk for like 2 months and i secretly set her nd eric up WITH US STILl NOT BEING FRIENDS nd they go out nd we become friends..should i be upset or just let it go? please help sorry for it being so sloppy nd Long:/