Between her and him centers on two elite swimmers Dominic and Sebastian, caught in a tangled love triangle with Isabella, Dominic’s public girlfriend. Charismatic, manipulative Dominic indulges secret intimate chemistry with the talented, sensitive Sebastian while maintaining a perfect romantic image for Isabella. Sebastian fully sees Dominic’s dual-sided hypocrisy yet cannot tear himself away from their painful, tender bond. Jealousy, hidden touches and constant emotional torment fill their training days. After countless quarrels, silent heartbreak and Isabella’s exposure of their secret, Dominic finally ends his two-year relationship with Isabella and chooses Sebastian, letting the two drowning souls find peace amid endless underwater entanglement and lingering yearning.
