He said he wanted to meet but never sent details

Guys who mean it usually send a day, time, and place within a few hours of expressing interest. Not always, but usually. If he said he wanted to meet and then went silent or went back to normal texting without mentioning specifics, he's either not actually prioritizing it, testing to see if you'll push for it, or waiting to see if something better comes along.

None of these are reasons to wait around. You don't have to assume he's a flake or dismiss him entirely. Just treat this as the actual information it is. He's interested in theory but hasn't moved to action. Your job is to make action easy, not to make him prove himself by eventually asking.

A good reply offers one concrete option, not multiple. One day, one time frame, one place if possible. This does two things: it shows you have a schedule that matters, and it removes the friction of him having to come up with something from scratch. He can say yes or no immediately. If he says yes, you're set. If he dodges or goes vague again, you have your answer.

Don't phrase it as a question that lets him think about it. Say something like 'Tuesday evening works for me' or 'How about drinks Thursday?' The directness is not pushy. It's efficient. A real prospect will appreciate it because it means you both stop wasting time.

Don't wait days to reply. That looks like you're punishing him for not following through or playing a strategy game. Send it while the conversation is still warm, within a day of him saying he wanted to meet.

After you send it, actually stop expecting a response. Give him 48 hours to respond with a yes, no, or counteroffer. If he doesn't reply in that window, he's not prioritizing you. You move on and don't send a follow-up. One opening is enough. If he comes back three days later with an excuse or a vague 'soon', your reply stays the same. no second chances at the planning stage. By then you're already mentally checked out, which is the right place to be.