I asked him to hang out together, and he told me I may have to take a rain check. What does it mean?

Anonymous
Last week, I asked him what he will do during the week and told him to hang out together, but he said he has Been sick all week (Yes, truly, he has been sick all week) So he probably will stay home and take rest, and he asked me what I'm gonna do during weekend. And at the last sentence, he wrote, 'you may have to take a rain check.' And I replied, it's OK And I'm gonna take a rain check then. And I also replied I hope you get better soon and Then let's hang out together. And there was no reply for that.

But after, When we meet at school, we talk like we used to do, and when I was in a bad mood, He asked me are you OK? And gave me some cookies also.

What does 'you may have to take a rain check' means?

Does this mean he doesn't want to hang out with me in an indirect way or He wants to, but because he really needs rest, He wants to do later?

And he hasn't talked about the rain check with me after I replied.

Should I ask him how he thinks about The rain check?

Help me!

I asked him to hang out together, and he told me I may have to take a rain check. What does it mean?
3 Opinion