I can't figure my teacher out!?

So I'm in the 6th grade. And I had a 5th grade teacher named Mr. Fremen. Mr. Fremen was mega nice to me when I was in 5th. He wasn't my homeroom teacher, but he was my "2nd homeroom" teacher, kinda. He always seemed to care, and everyone would be like, "Stacey, you're his teacher's pet" and "Stacey, Mr. Fremen loves you!". But in the beginning of the 6th grade, I got in2 trouble with Mr. Dale (my 5th grade homeroom teacher), Mr. Fremen's best friend. Mr. Dale and Mr. Freman heard me talking and they disapproved my volume. Mr. Dale yelled at me while Mr. Freman was standing there. Now, Mr. Freman still says hi back when I say hi to him, but it's different. It's not one of those, nice, kind, hi's. It's just, well, a hi. Something's changed. I think Mr. Fremans's gotten over the thing with Mr. Dale, but I think he feels differently about me. I really want to know what's up and how to fix this. PLEASE NO ANSWERS LIKE,"JUST 4GET IT" OR "I DON'T KNOW". I WANT ANSWERS THAT CAN ACTUALLY HELP.