She shouldn't have fallen in love with you. She was a Superhero, one of the strongest and besides kryptonite, you were her weakness, a lowly human

Sure she could be doing better things right now, than watching her "human crush" from afar. And yes, she's been "stalking" you or something, but it's not like she's malicious. She just...likes you

Plus, it came in handy today, when you were in danger of an alien threat. After she stopped it she turned to you

"Hello" she said coldly, hiding her nervousness