Plunge

"Just jump!" He was shouting at her again. "Once you are in, it's fine!"
She shuffled her feet uneasily on the rock. Trying to flatten them against the cold, slippery surface. He had been trying to engage her enthusiasm all weekend. Why did she have to be enthusiastic? Wasn't it enough that she had come in the first place? Particularly now that she... Well, just particularly.

She held up the idea of jumping in her mind and examined it. The grey-green water was moving lumpily a little below the level of the rock on which she stood. Her bare feet were growing numb and the idea of throwing herself into the powerfully-cold sea was not appealing.
"Look... I'll show you..." And he was clambering out onto the rock beside her, water pouring off his disgusting, seal-like body and onto her feet. A small wave of revulsion washed over her. A baby brother to the real-life waves surging at her feet. And now he was jumping in again. Splashing icy water all over her. As if that would persuade her of anything. A small, intense spark of anger jumped into life inside her. Warming her. She took half a step back and leaped outward, screaming. Screaming something. Screaming something at him.

As the water closed over her head she felt a surge of relief. It wasn't so bad after all. Better than the waiting. She wondered whether he had heard her words. She wasn't quite sure herself, what she had screamed. It might have been nonsense. Or "Geronimo!" But it might have been "I'm leaving you" or "I'm pregnant".