Is your ex interested in starting over?

I’d check if he really owns the house. Not saying it’s important (for me it is not, it is important that a man is independent but he doesn’t need to own property) but I’d still like to see how he went from being homeless to buying property relatively fast. Is he reasonably gainfully employed?

There is nothing wrong with sitting down for dinner with exes. But I only find it comfortable if there’s no romantic feelings. I socialize periodically with my ex husband. For sure there’s no feelings, plus it’s typically something family related and it’s not just us two. I only find it uncomfortable if ex has romantic feelings for me. I had an ex significant other who’d not let me go, so sitting for dinner would be awkward, he used every opportunity to try to convince me to come back.

No harm in meeting ex for dinner. See how it goes. Personally i think if relationship did not work out then, it wouldn’t work now but there are no rules. Why not meet as friends and see if there is a possibility. Especially if he is in the same city