When someone jokingly asks you to invite you to dinner, how should you reply?

If it's a good relationship with me, then I'll tell him, that's good, let's go, let's go, I'll treat you to dinner, you pay the bill, hahaha. If we have a good relationship, we can play jokes on each other. It doesn't matter. If I really want to treat you, it doesn't matter. I can also treat you.

But if it's just a normal relationship, it's my treat, and I'll say. Oh, I'm so poor recently. It's heartless of you to let me treat you. Bring your wallet and lend me some.

Different relationships have different corresponding words. I don't mind people playing such jokes on me, but I won't play such jokes on others myself. If I say it, I really want to invite them to dinner.