Images flashed through his mind. He saw Nico and his sister on a snowy cliff in Maine, Percy Jackson protecting them from a manticore. Percy's sword gleamed in the dark. He'd been the first demigod Nico had ever seen in action. Later, at Camp Half-Blood, Percy took Nico by the arm, promising to keep his sister Bianca safe. Nico believed him. Nico looked into his sea-green eyes and thought, How can he possibly fail? This is a real hero. He was Nico's favorite game, Mythomagic, brought to life. Jason saw the moment when Percy returned and told Nico that Bianca was dead. Nico had screamed and called him a liar. He'd felt betrayed, but still... when the skeleton warriors attacked, he couldn't let them harm Percy. Nico had called on the earth to swallow them up, and then he'd run away- terrified of his own powers, and his own emotions.
Eros is an issue of boundaries. He exists because certain boundaries do. In the interval between reach and grasp, between glance and counterglance, between ‘I love you’ and ‘I love you too,’ the absent presence of desire comes alive. But the boundaries of time and glance and I love you are only aftershocks of the main, inevitable boundary that creates Eros: the boundary of flesh and self between you and me. And it is only, suddenly, at the moment when I would dissolve that boundary, I realize I never can.
The event of falling in love is of such a nature that we are right to reject as intolerable the idea that it should be transitory. In one high bound it has overleaped the massive of our selfhood; it has made appetite itself altruistic, tossed personal happiness aside as a triviality and planted the interests of another in the centre of our being. Spontaneously and without effort we have fulfilled the law (towards one person) by loving our neighbour as ourselves. It is an image, a foretaste, of what we must become to all if Love Himself rules in us without a rival. It is even (well used) a preparation for that.
As Venus within Eros does not really aim at pleasure, so Eros does not aim at happiness. We may think he does, but when he is brought to the test it proves otherwise... For it is the very mark of Eros that when he is in us we had rather share unhappiness with the Beloved than be happy on any other terms.