That's... well, that's a lot to unpack. Will isn't quite sure where to start until Rosi says that last bit.

"What do you mean 'that one time at the night market'?" He gives Rosinante a sidelong glance. He thinks he knows what he means, but there's more to it here than just that time you got high and rambled at me. Now there's intent.

He's not mad, at least he doesn't think he is, not yet, but he is... suspicious.