Should I try and have sex with my professor?

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I've been enjoying my classes this semester, but I'm starting to think one of my professors want me to earn some "extra credit".

I'm 27 and she's ~35. Over the course of this semester we've gotten along well, nothing really unusual until recently. I'm pretty engaged in class discussions, and I like to make people laugh, so lectures can sometimes turn into conversations between the professor and I.

Before spring break, she started chatting me up after class, just about the material, though. Exchanged some e-mails for homework, but nothing further.

After class today she stopped me in the hall to talk to be about the syllabus, seemingly out of the blue. She mentioned how it's great that I'm so confident and willing to talk in class (most others don't say much), and that her cell # is on the syllabus if I need to discuss anything even if it's not about the class.

I didn't think much of it, at first, but why would I need to discuss anything? I'm doing well in the class and I'm not struggling with the material. It seemed like she just wanted me to call her.

Am I reading too much into this?
fwiw she's a chubby sjw type, even has "problem glasses" and hair is dyed red. Not super hot but not hideous.