So in Civilization V, I'm playing as Polynesia on an archipelago map. The first Civilization I come across is Greece, on an adjacent chain of islands some 20 hexes away from mine. About 10 turns after I meet them, they suddenly become hostile towards me and start egging me on about how weak my military is and how I should watch my back. When I check the details of our diplomacy, the only thing that appears (in red) is "they don't want anything to do with us right now".
I had never seen this before, and I can't imagine what would trigger it. Moreover, they didn't covet my land, as they hadn't even seen it (this was only like, the 20th something turn, so they couldn't even sail over to it if they wanted to). Whatever it is, it must be pretty serious if it alone can trigger open hostility that quickly. Does anyone know what this means, and what triggers it?