Are these people my friends? Should I leave them?

[Rose Anne]

So basically I knew these people since 7th grade. There were four of us including me, Lets call them A,J and C.

In 7th grade I was super close with A and J because we were in the same class, I didn't really talk to C much and she didn't speak to me either. The four of us would hang out, watch movies and go to the mall together but I couldn't really join in that because I wasn't free when they would go out but I went when I could.

In 8th grade I became close to C and I felt like the group was finally coming together. Later on I noticed changes with A, J and C, their interests changed and I felt out of place at times. Then another girl T joined our group, you see I wasn't really fond of T and I felt like she was trying hard to fit in (I know this may sound mean), but over time I got use to her and we kind of became friends.

Now in 9th grade I feel like T had taken my place in the group, I began to drift a away from the others because I didn't really seem to fit in. And now that the group wasn't even any more, J and C would partner up together while A and T would partner up, so I sat alone on bus rides.

Now A, J, C and T would make plans together, leaving me out. They would post the pictures of their outing on social media, I would see it and wonder why they didn't invite me (They think I don't go on social media because I always set my setting as offline). One time we were having a conversation and A "accidentally" slipped out that they went to the mall. I took the oblivious approach and asked "You guys went to the mall?" and A answered with "Oh shit guys told Rose we went to the mall ", she said it in a joking tone but it did hurt my feelings.

Other people have been noticing my situation too, saying that it seemed like they exclude me and that A, J , C and T were becoming mean.

I'm also usually a quiet person and slightly introverted. I'm not sure if saying this matters, but it might mean something.
They also don't reply to my messages to them, They just read it and leave it.

[Linda Ken]

There is no need for such people in your life..make new friends who are true to you

[raja]

Remember the saying that "BIRDS OF A FEATHER FLOCK TOGETHER." The people whom you have mentioned may be having similar hobbies taste and likings .Hence they get together automatically. It is not that they are ignoring you purposely. It so happens that they get grouped together because they have similar ideas and other similarities. If you want to be with them first build up a friendship with them .Give them a treat and take them for a film show at your expense .If it is not possible search for some others with whom you are comfortable.Another way of attracting them is to do extremely well in your studies in class.If you become first in the class and a price winner you will become the centre of attraction in the class .You will be the most wanted student among other students. Without getting disheartened work hard and come forward. Be the leader.