I've kind of bumble into what I think could be some great game. I'm know it's not original, but I was just wondering if you guys have any tips?

The situation is that I'll be going out on a date with this HB, and although I know she suspects I'm interested in her, I'm still keeping just enough doubt in her mind that I might just be being friendly. The date was arranged over text, and of course I'm going to escalate and everything on the date, just wondering if you guys had any tips on more verbal game, which I'm much worse at. Thanks!