Haeun's Links
Ezekiel sees Haeun often, due to the circumstances of his work. He finds it more convenient to just be nice to her, as his visits with her are short. It's also an advantage, since Haeun gives him lots of gifts and shows him around. He thinks it's more of an advantage to have her trust him, just in case.
He thinks Haeun is very childish and innocent- much like some of the angels he knew back when he was an angel.
Although most of the gifts Haeun gives him go into the fire (because of Asura), he always thanks her with a smile.