I need help ASAP (online dating)

So I’m 18 and im talking with this guy (22) online since this February. We seem to have a chemistry between us, and I’m having fun with him.

We were just talking and he was like “what are you doing now?” And I was like “I’m cleaning my room.” And he said “When you finish you should come and clean mine too, it’s really messy haha” and I was like “sure!” (That was a sarcastic comment). We both agreed on keeping our privacy and when we both feel ready to meet, then we would. After telling him that, he immediately gave me his home address. I haven’t opened the message yet. I don’t know what to say. I mean, I hope he doesn’t ask for mine too. I’m not ready to give any of that information yet. And also, what should I say back? That I was joking? I don’t know, I really need advice. How would you respond to a home address?