Texting something as basic as "Goodnight!" or "Have a nice night!" might go a long way, especially if you don't want to escalate the topic. If you know you'll see your crush soon, consider texting them something like "See you tomorrow!" Mention whether you intend to visit them at a certain location. This shows that you're not just sending a quick message and could help lead to a date/interaction later on. If you have a question about how to say goodnight to your crush, feel free to ask it here! We're happy to help.