And by the way, there’s a way to avoid this in the future. When he asks if you want to go out and then says he’ll call later in the week, tell him this very kindly: “You know, I’m really interested in going out with you, but my schedule is pretty hectic this weekend. [Make sure you qualify that it's this weekend so he doesn't get the impression you're so busy that you won't have time for him.] It would be great if we could make our dinner plans now. That way we can be sure it works out. Would that be okay with you?”
If he’s serious about getting to know you, he’ll spend the extra few minutes it takes to make a plan, or he’ll commit to when he’s going to call back with details. If he doesn’t do either, it gives you some valuable insight. Maybe he isn’t serious about dating and relationships?
Let me know how it goes, Jean. I’m here when you need me!