Not sure what to do plz help not sure who to talk to since my friends kinda suck

I have this friend who I met at TAFE in 2009 and so we have been really good friends up until 2 years ago. so I introduced her to my childhood bestie (we were not besties at the time) but still friends so when I met the new friend. I wasn't talking with my childhood bestie cuz we had a falling out after high school but then we were friends again in 2010 ish 11. and I introduced her to my new bestie (from TAFE) anyway we all went on holidays together in 2012 and on the holiday me and childhood bestie had a fight cuz she thru a drink in my face and got drunk and was being a bitch because of something not related to her like (I didn't want to have some weed from a guy she brang to our hotel) this bothered her and she started a drama anyway we had a bit of a tiff ( after this I was a bit standoffish toward her but still friends). she found a bf and didn't really hang out with me and new friend then they broke up and (my cousin is friends with her that bf) & when they broke up my cuz posted a fb status her and the childhood bestie ex bf catching up ( now my cuz and that guy r strictly friend's I met him thru my cousin) I liked the status a my new friend from TAFE full medled in this my liking the status ( childhood bestie was not happy) after this childhood bestie never said a word to me about this tho. Toooo me it looked like New friend starting problems. anyway fast forward to the last year New friend and childhood bestie are better friends with eachother than with me in my opinion this would have never happened if the situation was reversed cuz a as a loyal friend I wouldn't do that. what are your guys thoughts on this ? I am still friends with both but new friend really hurt me there is more stuff than this tho but it's too long to write here. in my opinion a loyal friend would appreciate you introducing their friends to you and be a nice friend not exclude you and leave you out then say their excuse was they couldn't be bothered with the friendship. mind you ( i could have said can't be bothered with her long time ago she is not an easy friend (has a lot of body dismorfic issues) but I stuck around for 8 years) I need another person's opinion sorry long post.