It might not be a bad thing. Something that appears to be bad sometimes is the best thing ever. You slept with him years ago, who knows if he is worth to spend 5 minutes with right now? It might be a ruined evening. Especially since he’s rude. It’s a blessing. Maybe since it’s not actually a dating experience he didn’t bother to be polite. Some guys are very dismissive when it comes to casual sex. Not worth trying to be a gentleman. Screw him. It’s a good thing he didn’t contact you. Possibly saved you from a headache. He sounds wishy washy and immature