Thank you RomanSunburn. Yes, I'm 18 years old (and no, you did not insult me

), but I've always been a logical person and really mature for my age and I can't help feeling really childish now that I'm acting like a true teenager!
My friend is 23 and our instructor is 32 (lol. same numbers! I only just noticed). I agree that it's very unprofessional for a teacher to get too close to a student. What really drives me around the bend is that this isn't the first time. There was another girl before my friend came along who was exactly in the same position and it didn't end well. Not well at all. Sensei realized that this girl was too selfish and too full of herself and didn't deserve her trust after all. In fact I think she had spoiled her herself. She tried to treat her like the rest of us afterwards, but it was impossible and it all ended with the girl's expulsion from our dojo. She went out the door barefoot (holding her shoes in her hands), still wearing her karate uniform and tears pouring down her face. I cannot tell you how shocked everybody was. Me and my friend were the only ones who knew what had actually happened. Now I can see my sensei and my best friend both changing and I can't be sure if that is good or bad. I can't help but to notice that my friend is becoming more and more like the girl that was thrown out and I fear the end of their relationship.
As for finding new friends, I have to admit that I'm not very good at it. I get along with people alright, but it takes me a looooooooooooong time to trust anyone enough to call them a friend.
Your point about fiction relieved me immnensely
I suppose you're right about the training too. I've tried to please her long enough (4 years). Maybe it's time I trained for my own pleasure.