My boyfriend has a best friend that likes him and now I�m jealous?

Girl i have been in the same situation. i talked to my bf bout it and thats exactly what he told me. and everyday it got worst cause i was in none of his classes and he was always busy on the weekends so he would always talk to her. but what was different is she wanted to become ''friends' and i hated her. i tried to make him jealous my talking with his friends and ignoring him but verry bad idea. but anyway if you want to i told the girl what my problem was but it didnt help really but its ok your not selfish hes your man and its his own fault that hes talking to another girl trust me the jealousy doesnt really go away i dont know if you wanna break up with him or not also tell him that your not sure if you wanna still be in relationship cause hes always with that girl really talk to him bout it really show that your upset im with you that he needs to stop talkin to her like i said its your choice if you really wanna break up but i know how you feel i dont know if this was any help and im srry if it wasnt but dont worry your not alone