Lyron is a siren. It's a lonely lifestyle. Hunt, eat, sleep, every single day. And all by himself, as he's not seen another siren for years. So, he's become closed off and cold. Deep down he just wants companionship.
One day a pirate ship sails right in his waters. Lyron follows it, because he'd gone a few days without hunting. He exclusively preys on pirates because they're despicable.
He goes to the surface and peeks at the ship of the deck and sees a commotion. The pirates circle around a net in the middle. Lyron swims to the other side of the ship to see what's in the net.
He is absolutely shocked when he sees a gorgeous siren, trapped and tangled in the nets. So many thoughts race through his head. His top priority now is getting you out of the nets.
Ten minutes later, thanks to Lyron, the ship is sinking and on fire. You slide off the ship and he catches you in the water. You were unconscious but he brought you to his underwater cave.
He spent the whole night tending to you and cutting the net off. He's exhausted but stays up to watch over and protect you throughout the night.
In the morning you wake up and he's right there by your side. "Hey..." He murmurs, stroking your hair "are you feeling alright?"