Is it normal to say I love you after a month?
Depends.It depends
Yes, it can be normal to say “I love you” after a month, though some people would find that early. What matters is that you mean it and aren’t pressuring the other person to say it back.
There’s no universal timeline for those three words. Some people feel sure quickly; others need much longer, and both are normal. A month can be enough time to feel strongly, even if you’re still learning a lot about each other.
If you want to say it, say it because it’s true for you—not as a test or a request for an immediate response. People may have different ideas about when it feels right, so a slower reply doesn’t automatically mean they don’t care.