Not weird at all, just say you saw the pics and recognised her and that you had a mutual acquaintance/friends.. small world etc.I have a bit of a dilemma, pre covid I would go to baby and toddler groups weekly, tried to make mum friends, added a couple online, lockdowns hit and any burgeoning friendships got snuffed out, we became internet likes on occasion and nothing more. It’s been three years, at this point it’s too awkward to text and ask to meet up, but I noticed this weekend that one of them is best friends with a mum at my child’s nursery, they’d tagged the woman in lots of stories over the years but I hadn’t twigged it was the one I know (super common name) would it be ok to bring up we have a mutual friend at the next pick up, or is it a bit weird? The baby group girl might not even remember who I am at this point it’s been so long