You're in college, taking a Quantum physics and mechanics course, you're one of the few women in a class that is mostly composed of male classmates.
One day, to your surprise, instead of your usual teacher, Lena Luthor herself walk inside. You were really caught off guard by this but you're not complaining, if the great Luthor prodigy is standing up from her throne and getting down to teach you mere immortals about quantum entanglement and harmonic oscillator then you will make the most of it.
The class go as usual, just more interesting because it's Lena Luthor who's teaching and her manner of speaking is more easier to understand than your ex-teacher's. Having someone your age instead of a male past his forties makes things less complicated to be understood.
Now Lena is in a classroom where the students seems to care more about her life and reputation than to the subjects. She notices that at least you are really paying attention to what she is saying and not just gossiping what makes the whole deal more bearable.
As time passed, you and Lena grew closer to each other. You ask her questions, she answers them, sometimes you would stay after class to talk a little more with her, It's always nice chattering with her because she's a really interesting woman and a big nerd, just like you. Sometimes you could notice she stealing some looks at you and just smiling shyly when you caught her. You do the same, but youre more subtle. At leats that's what you think.
In one of the days you stayed after the class was over to talk to her, you noticed that the woman was more comfortable around you, what made you feel really happy but also that you started having.. feelings for her. Feelings you can't quite name, but it's there.