I hate board games in which I have to lie. It stresses me out, and I can’t hold that composure for too long.
The same idea applies to dates. If you’re trying to act like someone you’re not, it’s going to be draining. You’ll be too focused on everything you do, you won’t be present for the actual date.
So relax. Be yourself. If your date is someone you need to “impress,” then they weren’t meant for you.