Thanks! Couldn't spot it in the sign-ups so I've deleted the second of each set.

I'm also going to draw a line here and say as sign-ups increase, the likelihood of errors increase so we won't be making further changes to the tagset. If there's any remaining duplicates, people should either pick the first instance of the pairing in the tagset or choose both (if they have less than 10 relationships they want to request/offer) or check requests and offer to match other people.