I would reverse that and say that Oskar loves Eli because he realizes the awful nature of Eli's curse. I see Oskar as a person who is by nature compassionate. He also has something to feel guilty about in this scene because he taunted Eli for being a vampire. His realization is that Eli needs his love. Impulsively he hugs Eli, and seems to me that he is trying to put the wounded Eli back together. The blood in this scene really marks Eli as being both demonic and a victim- another bloody paradox.Oskar prefers the horrific truth to conforting lies, which is ultimately what allows him to love and be loved by Eli.
It would be an understatement to say that what follows is a frank discussion about Eli's curse- which leads naturally to the theme of compassion, "Be me for a little while."



