Giles and Anya! I loved them so much in Tabula Rasa, and I think they could have worked together <3 Though she'd definitely be trying his patience. A lot 😛
I would like to see it explored but most of the fics I read paint Giles as a very patient man and so in love with every Anya quirk and it just... I'm sorry I don't buy it. Giles had shown impatience with Anya's frank statements on the show and I think a pairing would be far more interesting when both aren't 100% in love with every aspect of each other because let's face it, that's boring and unrealistic and canonically incorrect.