Is three days too long to message after getting their number

When she gives you her number, she's given you a small yes in that moment. That yes has an expiration date. It's not weeks long. It's more like hours. By the end of that day, you're still in the warm zone. By day two, you're cooling down. By day three, you're cold.

She may check her phone the next morning hoping you texted. When you don't, she moves on. Other people are texting her. Other people are showing up. When you finally message on day three, you're not reigniting anything. You're trying to start from scratch. The context is gone. The energy is gone.

If you're messaging after two or three days, your text has two jobs. First, it needs to remind her who you are and why she said yes. Don't assume she remembers. Be specific about where you met or what you talked about. Second, it needs to show you're interested and present now, not just reaching out randomly. A simple reference to something from your actual conversation does both at once. Skip the apology for the gap. Skip the explanation. Just show up and reference something real.

Send it during the day on a weekday or weekend morning. Not at 11pm. Not at 2am. She should see it when she's awake and in a social headspace.

If she doesn't reply within 24 hours, you've got your answer. She's not interested enough. Don't follow up. Don't send a second message. The gap already hurt you. A second message makes it worse. Move on and text faster next time.