He's someone I've know for years, never felt any great connection but contacted him a couple of weeks ago for a specific reason, chatted briefly and ended up going for a drink. It neither was or wasn't a date, just friendly, but I suppose if really successful could have turned into a date.
Anyway we had a pleasant enough evening, had a bit of a heart to heart/ off load (him more than me), but it was definitely friendly rather than flirtatious.
As we were saying goodbye, we didn't make any future arrangements, but he said he'd seen me doing an activity with a (mixed) group of friends on FB and he'd be interested in joining.
So when we were next due to go I invited him. He hasn't replied. Not any sort of acknowledgement. He's definitely seen it and he's been on messenger several times since.
I don't care if he comes or not, I was just doing a nice thing and the more the merrier etc. but find I am mightily pissed off that he cba to text yes or no. WTF is going through his mind?