Anyone who's also interested will feel pumped to know that you want to see them again, and if they aren't, then you'll probably be able to suss that out much sooner by being honest about your feelings. So when exactly is the best time to text someone after a goodnight first date? Because, assuming you both had a good time, allowing a night for processing can give you both the chance to get amped up.
Letting them question if things went as well as they thought, followed by positive affirmation the next morning, shows that you're interested but not overly eager. Nevertheless, if your date sends a cute goodnight text, then I would definitely recommend responding when you receive it. But if you don't hear from them first, here are five texts to send the morning after that will let your date know you're definitely interested in seeing where things could go.
We should do it again sometime, maybe over some [insert pancake emoji]," should do the trick!