Plz help! relationship problem need good advice!?

I have a boy friend (bf) n we've been goin out for 1 yr n 4 months, and I also have a bestfriend I've know her for like 2 yrs and @ first she didn't get along wit my bf but like since may dey been getin real close, like instead of her cumin 2 me she'll go 2 him, n my bf has stop openin up 2 me, im not mad I just feel left out, so I told my best friend how I felt n she got mad @ me bcuz she thot that I thot she was takin him away which I really don't think dat, c I came 2 her n told her how I feel bcuz my bf don't listen n I thot my bestfriend wud care but she got mad, n I feel dat my bf treats her beter, I asked my other friend n she also agrees, so I told my bf to treat me da same like he treats her, n den I cry n tel him n he says he luvs me n doesn't mean 2 treat her beter n al his guy friends tel me he always toks abt me but since da beginin of july he's been actin weird, n promises me he gona change but never does, wat shud I do, is my bestfriend doin wrong cuz after I told her how I felt shes stil around him like a lot I mean I wud expect her 2 atleast tel my bf 2 spend more time wit me instead rite?, n every1 thinks I'm just jealous but I'm not, n dey sey it isn't a big deal, but I feel like I'm loosin my bf, n my best friend @ da same time! Idk wat 2 do! Plz help :( n also most of da time my bf takes he side instead of mine!Plz help! relationship problem need good advice!?
let me tell you a story. I was with my boyfriend for about a yea or 2 years, my BEST FRIEND of 9 years tried sleeping with him. I found out from her friend, completely DENIED it, I asked him and he denied it. so i said ok its not true. New Year's came and she was FEELING ALL OVER HIM!!! We got into a huge fist fight, I beat the sh*t out of her and the truth came out. I also beat the sh*t out of my boyfriend. He basically defended her when i asked him the first time. worst new years ever!!