Shunned by Coworkers

I just want to vent. I'm not sure where to post this since it happened at my workplace. It doesn't affect my work performance, so I decide to post it here.

We used to be a group of 8 women from different teams and divisions. We got close because we used to ate lunch together at the canteen. But for the matter I don't know, one began to avoid us. Later, the group leader made a new group chat excluding her. I asked what happened to both of them, side by side, but I got no reliable answer.

Soon, the another one shunned too, but this time I know it was her fault. Despite her effort to befriended us back, the rest kept rejected her. She gave up later. I'm proud to say that I'm the only one who still maintain the good relationship with them both up until now.

Looking at the two women above, I realize that they might turn and stab my back someday. And that 'someday' is now. I have no idea why, but I suspect it might be because of silly misunderstanding. I've realized they have shunned me for weeks or two months prior. At first, I thought that maybe I was too paranoid and such. Also like the second woman, I tried to befriend them back.

But today, I left the group. I don't put the detail since it'll be too long, so to cut it short, they obviously lied and got rid of me during lunch today. It made me quite angry and disappointed. I also realized that my efforts were futile and they were too negative lately. So I left this toxic one.

Thought it was over when I left. To my surprised, one of the remaining members asked me why I left, acted like nothing happened at all. As far as I know, they didn't do this to the first two women.

She whispered when she asked but it was in a room full of people and they can hear us. I don't know if it was a good move; I feel it should be discussed in private and feel uncomfortable to tell it in front of coworkers who weren't involved. I also questioned her motive. I'm afraid they would make a misleading gossip about me. So I lied, pretended I accidentally click wrong button, to minimize the information they'd get from me.

I tried to brush them off from my mind. Sadly, one of them has her desk in front of me. I feel so uncomfortable around them.

Thanks for reading this long post. Don't worry about my work performance. I don't mind to talk to them if it for work purpose.