I never had to turn someone down in my entire life. I do bachata dancing, and this girl in my class is always hitting on me (I think) and I don't like her.

She is like extra nice, she gives me the looks and catch her staring at me, says stuff "you can invite me to drinks when we go dancing", puts shit tons of emojis of kisses on chat and shit like that.

I don't want to create bad feelings in class saying being mean to her (I find it quite hard to be draw the line between concise and clear and rude) and because I have to see everytime I go and I really enjoy dancing I don't want it to be weird. Also I don't want to say "stop hitting on me" if she was just being friendly (because to be honest, I'm not 100% I know how to read people).

Am I overthinking? Sorry lads for such a dumb question.