[ There's another pause here, though not one of being flustered. Teru just needs a moment to think. It's just turn to lean on the rail and look over the lake for a moment. ]

I don't know. There's no specific moment that comes to mind, surprisingly. It was gradual... but at the time Kira appeared, I already knew I trusted you.

[ So 'somewhere in the first two months of dating' is his vague answer. ]