Prove you're serious by asking her on a date
From Create Your Own Story
"Oh, um...I'm not necessarily looking for a one-night stand," you say. "I thought about that and couldn't go through with it. I don't usually do casual sex, so I'm open to an actual...you know...relationship."
The woman looks surprised. "Are you asking me out?" she asks.
"Uh...yeah, I guess I am. Badly," you admit with a self-deprecating laugh. "Would you want to go to dinner some time?"
"You know, nobody has ever asked me that after finding out about me," she says with a smile. "I'd love to. By the way, my name's Marina."