I cant communicate

Its a problem cause im still upset with my bff about things that happened months ago but i never said anything so i just get more mad because she didnt apologize but i also didnt tell her it hurt me so i cant really be mad but i am. And the thing im most mad about is because of a stupid guy who i liked for a long time and she knew that and she still was saying that she had a chance with him and said she was gonna shoot her shot so i messaged him first but then she never even did anything so i just ruined my life over nothing and she never apologized or even seemed to feel bad my other friend told me she was mad at ME because i did something and she had to 'give up on him' and its so stupid cause she never even liked him as much as i did and its not like he even gave a shit about me anyway so it doesnt really matter but im still mad about it i just havent told her and there are other things that have bothered me but i never tell her becausr she always feels so bad for way too long like she cant take criticism without crying about it for years and i get it but what i dont get is that she'll bring it up and guilt the person that criticized her so now i dont want to tell her anything that she does wrong otherwise I'll feel like a shit person for being upset with her even though its normal to be upset with people sometimes