<human>: I am a woman and 21 years old, and I'm starting to think that it's impossible for me to have female friends. I do not know if it's me that's wrong with or if I just had the misfortune to meet with bad friends. I love to hang out with women and talk shit and have generally fun. It's totally different than hanging out with the guys(not as fun). I have many guy friends (because I easier find guy friends).

This always happens when I find a group of girlfriends to hang with: I have fun with them, talk a lot and hanging out with them at school etc. But as soon as school is out, the girls starting to hang out with each other, in their rooms and laugh and totally block me out and never invites me.

This has happened to me plenty of times, they are always two girls who hang out with each other all the time and it's like they really did not want another one.

I have heard that girls usually just want to be two in their group. I do not understand that. I've been with guys all my life and never been victim to this when I am with them. My question is: Is there something wrong with me? Or is that girls always do this? If you're a girl and behave like this, why?

Can you provide a brief overview of the text?
<bot>: When I find Female friends, they always blocks me out. Is there something wrong with me? or do girls usually do this?