Anonymous wrote:I think he thinks you were hitting on him and want to have an affair since you were emailing him to get lunch and drinks.
Nice way to make this about the woman hitting on him. Nothing was said about drinks except coffee. Normal, not insane men don't think you want to have an affair because you, as a professional colleague, attempted to network with them.
OP, i would cancel the lunch and not take his calls. However, I would not ghost him entirely - I think ghosting is really awful. Maybe next time he calls, say, hi Larlo, glad you called. I'm going to have to cancel our planned lunch. I also wanted to say I've really enjoyed networking with so many people after the meeting, and it was nice to get to know you, along with everyone else. But I'm entering a busy period at work and need to ramp down my outside calls and emails. Maybe we'll connect at the next conference.
And see how he reacts. If he can accept a respectful brush off, maybe he's worth staying in touch with over a long haul. And if he reacts badly, then you shut it down more firmly. Larlo, your phone calls are beginning to make me uncomfortable and I'm going to have to ask you to stop.