My bestfriend of 4 years., guy problems. PLEEEASE READ>?

umm r u asking if you should tell her about her infected boy toy? if you r I totally think you should tell her even if the ***** wont believe you because first of all if she thinks youre lying you could just wait till she get watever the **** he has and say I told you so or if she believes you then It can help your friendship that is if you still want to be friends?