Their first date was at the other person's place.
The other person chattered on about how they'd used Sheldon as their profile picture on a dating app, only to have their profile rejected because the photo supposedly wasn't really them.
"I think it's totally me. We both do theoretical physics research, we both work at Caltech, we both have strict schedules, we both dislike change, and winning the Nobel Prize is one of my goals too..."
Chang Xin watched the other's thin lips as they spoke, and the tip of their small tongue that showed from time to time. Her dark, bright eyes shimmered.
Without thinking, she asked, "May I kiss you?"
Theme: If you like weirdos, I'm actually quite beautiful