A friend (call him Bob) and his wife failed to show up to our wedding, despite having RSVP'd and later saying how much they were looking forward to it (a couple of days before via text). The wedding was a full day with drinks package, sit down meal etc and so there were two empty places and meals served to empty chairs, a bit awkward for those sitting either side and of course it was fairly costly to us as it was around £120 ph. To contextualise this friendship, I've known Bob for years working in our sector (working with vulnerable people) and we have been through a lot of fairly life-changing / 'bonding' challenges as part of a close team of colleagues, hence me wanting to include him and his wife on the day as a thank you and acknowledgement of how much I've valued his support. However he's not a close personal friend who I would generally see socially on a one-to-one basis at the weekend, or talk about really deep down personal stuff. My wedding was at new year after which we flew off on honeymoon for 3 weeks, and then went back to work and I never got round to contacting him, but I have heard nothing from him either.
I'm not sure if I should feel worried in case he's not well? Or annoyed he never got in touch? Or if I should do anything? Time slipped by after the wedding so quickly and we were so busy that I just never got round to contacting him and now I think it feels a bit random and awkward as to how to word any contact. He has had some anxiety issues in the past sometimes so I don't know if that has hit him. WWYD?