See, that's the part I don't get.

[ He's stripping his cape off, dumping about half the water on one corner. ]

When I followed you you said you were going to incinerate me. And now you're saying you just wanted to spar?

[ He offers her the garment and the canteen without closing the distance any further, standing pretty much as far away as he can stand without her having to move a lot to reach for it. ]

It's just goo. Rinse and it'll come right off.