I was wondering - we know that Siuan and Moiraine became friends as novices, and that they were lovers by the time we saw them as Accepted in NS. Do we know when that happened, exactly?

It seems weird that Siuan never showed up in Moiraine's test for the Shawl (at least, that we saw). You'd think they'd exploit any emotional weakness. Maybe it's one of those Tower conventions? A lot of the testing Aes Sedai would probably have had pillow-friends themselves.