O.o?

O.o?

Ok so I'm deciding to tell you about what happened yesterday for the sake of boredom.

I was in my math class like 5 minutes before the test sitting by myself and all of the sudden this blonde girl comes up to me and starts talking to me. She ask if I study for this class?(yes) So then she says she says that she missed like three days for this class, and was wondering if i want to study with her.

I noticed two things just before that tho:
-She smelled of smoke, not like a normal person who smokes tho.(I personally can't be by smokers, it fucks my smell)
-She just asked some other guy about it. sitting like 2 rows infront.

So I was like......great, some idiot is tryin to cheat off of me. So i said no and then she told me her name and walked away.

Question: Should i have let her cheat off of me?

My Reasons:
-If its a friend its usually fine, but random people im not too confortable with.
-Learning from experience is the best way to teach someone whats the best thing to do.