I can't work out if I'm being petty so wanted to get some other opinions.
I have a friend, let's call him Bob. I've been friends with Bob for many years since we were sat uni (20 yrs ago). We get on well on a superficial level and now we've got kids the same age we see each other occasionally. We live in different areas of the same city and I've noticed he has been posting on a Facebook group I am on - but it's a local group to me but not to him at all. We're not at opposite ends of the city but the group is about local recommendations and services, and I'm just not sure why he's on there. It feels a bit strange.
I've also just discovered he's Facebook friends with my mum - who he's never met. I can't work out why. And I can't work out why it bothers me!!
Would you say anything to him or would it just sound loony if I mentioned it??