What would you do if your ex asked if you wanted to go out for dinner?

If your ex (who you ended mutually with and are on okay terms with) texted asking if you wanted go out for dinner next week and talk, and that you could think about it and get back to them closer to the time… what would you do if…

a) ...you still had feelings but were hurt over the break up situation?

b) ...you were not interested and perhaps moved on and met someone else? Would you ignore the text and not bother replying or would you politely decline straight away?

I ask this because I contacted my ex asking if he wants to go for dinner next week. It’s been 24 hours and he hasn’t texted back… I did say in the text that he could think about it and get back to me closer to the time so perhaps that’s what he is doing and he will get back to me soon? I keep thinking that if he definitely didn’t want to meet he would have replied sooner to say he’s not interested… I’m struggling to believe that he would ignore me as we were on okay terms.