so today we were at DS dad's parents golden wedding party. The situation is that DS dad and I are not a couple, we are amicable co-parents (DS was a surprise, we are/were longstanding drinking buddies) - more than one of the elderly relatives were saying things like 'Ah, so you're [DS dad]'s wife. I was generaly saying, with a nice smile, oh I am DS's mum. and not elaborating. Has anyone else been in such a situation and if so what did you do?