Am I lonely?

So look I'm a yapper i love to talk but the thing is I'm at the point in my life where I don't really know if my bestfriends are real. Like in my trio we're together but I always sense this energy that I'm not really a part of the group. They go shopping together, have so many secrets together etc they don't invite me to go with them and hide it atleast they pretend to because i always find out somehow. Anyways so after confrontation they were like you're wrong, you're out bestfriend etc so I brushed it off. Then recently one of them texted me really mean names saying I'm attention seeker (cuz I have 2 guy close friends) chuglikhor (cuz I tell them about MY LIFE!) said that I love to gossip and some things that I can't share here. So apparently someone told her that I tell my guy friends about my two bestfriends life which is not true i do tell them if it's related to me like when we three go out together but I never tell them in detail about their life. Also frankly they wouldn't be interested either. Anyways after this i felt apart from them. We still talk and hang out but I don't feel the same energy. But this girl has got to yap right so I started yapping to chatgpt. And chatgpt has the most logical and proper answer like i need that Ik that's weird but I don't yap yap like whenever I need help I go to chatgpt. So one of my friends saw this and said that this is loneliness at it's peak. Is it really? Am I really that lonely