What's wrong with me?

I found my a college classmete in my exboyfriend's friends list of facebook.

I don't know such long-distense and not familiar two people can become friends on the facebook.

What relationship of facebook's friends list mean?

I even don't care what's going on with this world's changing, but I seems don't get used to it which I thought I have got used.

Is this world changing too fast or mayby it's me refuse to change to follow up with this world.

PS. I thoutht I can easily express what I want to say, but it seems have many grammar mistakes in there that I don't want to correct it and I can't. Poor me!

If someone found any, please tell me~HA