Eliot Durant's Links
Ophelia comes into Eliot's life after he has lost Zariah (though he doesn't remember her.) He's lonely at the time and doesn't understand where this mysterious loneliness is coming from, so latches onto Ophelia quite tightly. Eliot at first sees Ophelia as a "pet project" and minor interest, just there to soothe his boredom and the ache of missing someone he doesn't remember. But over time, Eliot's feelings shift to being romantic. When he remembers losing Zariah, he becomes determined not to slip up again and to keep Ophelia around... Even though, in this case, that might not be the heroic thing to do.
When Attina and Eliot first met, the little Siren was absolutely rude to humans. Eliot found that unnecessary and unappealing, but decided he couldn't leave Attina to stew in her hatred. The two of them bonded over clothing design and he gradually dragged Attina into the sewing club, which helped her overcome her hatred. He treats her like a little sister now and is usually the first to scold her for bad behavior.
It's really hard not to like Elliot to some degree. Yu Tu finds him amusing and will open up the sillier side of her personality around him. Since he's so agreeable, he often ends up being dragged along on crazy adventures.