If you want, you can clasp your date’s hand briefly while saying that.
You’ve built the touch and both of you would be feeling very intimate in the dim setting by now.
After a few minutes, get brave and ever-so-slightly, shift your arm in an obvious manner towards your date. Does your date reciprocate back by bring their arm closer to yours?
No matter how your date behaves, don’t worry about it.
You’ve already set the ball in motion with your casual touch.