My teacher flirts with me (shes a female)?

yea...well she pretty cool. nice a$$ smallish ****. pretty face. idk well im 15 and its not just me its me and like 2 of my other friends. lol we flirt back and talk about how weird she is and howd we bang her. but ever since she found out we played football she started it. ill tell the story. haha ok well ill give some examples. usually i go to her desk and my friends sit infront of her. so i go up to her and we talk and shell throw in soemthing sexual. EVEN INFRONT OF THE WHOLE CLASS! my friend said Why dont you let me do me? (joking voice) and she said because i do you better than you do yourself. noone noticed except me and my friends. but thats because we talk about it and laugh about it. and she asked for our 5th grade pictures and she put them on her laptop. cuz she said shell show us her highschool photo. and then she always looks at our croach when we wear our suites for football...*sigh* idk what should i do? she gives us hints like she wants us to **** her. and shes extremly favorable to one of my friends. shes the meanest to me because im mean to her. but in a funny way. :/ she also stares at us alot. and she started wearing skinny jeans to show off her butt and she bent over literally camel-toe and fat *** in my face!? and started writing on the board next to my desk to play it off. -_- dont say im horny and overthinking it. i could care lless about her shes 30...