How do I please both people?

tell her that just because they broke up doesnt mean you havew to stop being nice to me and if she is a true friend then she will understand, actually my friend is ibn love with my boyfriend and likes all his statuses nd comments on his stuff but i never really get mad at her, i just let it go..but make her fell like if you was going through the breakup would she stop being you bf's friend, i think not. just tell her everything and maybe she will understand! I think yall will work it all out! hope this helps! (: