i have lived situations like these in the past and it was hard and painfull to cut off...
I had a group of 5 good friends
actually, my best friend cut off with me after 10 years of a good friendship...
but we were in the same group and the others had to choose because she didn 't even want to see me ...
That was the first dark period of my life...i was chasing her crying for an answer...we grew up together...but she just hated me...
After a lot of effort trying to stay in the group ...i did psychotherapy ( not only for that)...she insisted on cutting off ...and that you have the right to do it if you feel you are in a toxic environment and that s how the change comes...you learn more about yourself ...and what you enjoy in friendships.
I was social and happy at that time and made new social webs...and even that "dark friend" to me was a lesson...
But life goes on ...people change and even good friendships change even for practical reasons...
So i learned to live with that, go with the flow even though it is hard ...and lonely ...
But ,still can t figure out things about what i could do better ...especially with female friends....or how to "translate" sudden cut offs...