I agree with your assessment - you know what to do.

I would go for it only if you need to see this connection through to its logical conclusion in order to gain emotional closure.

Honestly, I wouldn't place any bets that this guy wants what you want, or that you will ever get the answers you seek.

You might want to find some info on "hoovering" before making any decisions.

Good luck and no judgement whatever you decide.

I think you know the answer already. He’s probably out of available options right now so he’s just testing the waters to see if anyone from the past will bite. I know a guy just like this who keeps several women on the back burner so that he can call them up when he’s bored or lonely. If he hasn’t made you a priority in the past and things ended badly then, you have your answer. If you want to put yourself through some unnecessary pain, then by all means say yes. Otherwise, say no and keep looking ahead.

Nope-ity, Nope, Nope.

Taking your "ex' back is
like going to a yard
sale & buying back
your own crap!

Hell no
You've already answered you own question in your confession.
Go back and read what you wrote.
Shift is what shifty does.
Shifty !
You deserve better :)

I might if I had your option for my life scenarios. Well, I'd only do it if they were willing to clear their schedule to spend the quality time such a conversation requires, were willing to be completely and respectfully open and honest in that conversation, were willing to fully explore the past, and were committed to demonstrating accountability in owning up to stuff they pulled...all things I'd do. But that's unlikely; they were very narcissistic so they'd never see themselves as responsible for anything, and they were looking for attention to make up for what they couldn't get in their existing "relationship" so they likely have emotional supply from elsewhere by now and wouldn't see value in such efforts that require things normally the domain of monogamy such as devotion and commitment. There was also little to trust with consistently weak efforts of poor communication on their part, so it wouldn't matter how willing, it would be a waste of time because their actions would show how little would have changed. In fact, they'd have to do a lot of consistent make-up work to change the perception they laid out repeatedly with ease.
And that brings us to the point: your man had chances, but without changes in their behaviour that he is showing you now, you know nothing will be different. And they aren't changing, are they? He's still being vague and can't even tell you why he's back. Likely because if he was honest he knows he couldn't have what he wants. Notice he doesn't care about your wants, or is willing to show you're both on the same page. That's because he's not and if he's upfront he knows he can't...or won't...give you what you need. He seems like a manipulative type; notice how he's feeling out whether you're desperate enough to give it away (and that isn't you) so he can have a good time while keeping you in the dark.
Send him packing; you deserve someone who can deliver more of what you're ready for in life in an adult manner. Realize that, set firm boundaries and declare your life a "no games/no players" zone, starting with him. Time to date guys who are ready for something serious because you're ready for something better.

I think you should go with your gut on this. Save yourself anymore future trouble with this guy that'll just end up blocking a better relationship headed your way.

Omg so funny
I'm laughing my ass off.
Good one :)
Yard sale bahaha

I know you meant this for the OP but maybe someone else too??? You covered that situation with plenty of detail and opened my eyes to things I didn't think about. It helped me with some hard decisions that aren't so hard anymore. Thankyou!