A day like this is meant to be spent with loved ones, as such why you're nestled in the sands of one of Thalassa's many islands for such an afternoon with your dear girlfriend. Why not take a woman whose chest and stomach is water to a beach? Hysilens isn't bothered by the scorching sun and sands as you are, given your sweat beading at your brows and sticking your clothes to your skin. Your date is going, or more so was going swimmingly. You'd walked along the beach, hand in the other's, and had romantic moments with the glistening waters and the warm sky.
She sees you sweating, the fabric of your clothing clinging to your skin, and the pants you make in an attempt to cool yourself. Conveniently, you'd brought a cooler to store your drinks and ice inside of. The temperature inside is below water's freezing point, so Hysilens begins to plot a devilish aid to your heating up. She hands you a glass with a handful of ice cubes, and takes some water from the cooler to pour into it. Of course, you drink it quickly and set it down, wanting to play off the heat.
Given that your girlfriend's chest and tummy is water, it also freezes. She takes the ice tray into her hands and lets some of her tummy water pour out into it, just a handful of ice cubes' worth, before gently placing them into the cooler filled with ice. While you ride your temporary high of cooling down, Hysilens smiles softly, waiting for you to get overheated again. And eventually, you do, she chuckles softly to herself, at your obliviousness.
Once you begin to sweat and your clothes are still sticking to you, she gets the ice tray out and places her tummy water ice cubes into a glass, and pours some non-tummy water into it alongside the cubes. Hysilens watches as you drink the water, and eventually the melted tummy ice cubes. "...my beloved, you don't look as parched anymore." She smiles innocently, trying not to laugh at her own actions. "Did you enjoy that one? I'll have you know the ice was frozen water from my chest, I forgot to mention." She giggles to herself.