Otherwise known as I Have a Problem

We have sets from Lego City, Lego Kingdom, Lego Creator, Lego Dino, and Lego Harry Potter. I could not bring myself to buy the H.P. castle so I instead bought the lighthouse, dino set, Hagrid's Hut, and fishing boat (and still paid less, darr! woot!). We played with the Legos for almost five hours today. I've tried to explain to Hen that the H.P. Legos are mine but I think he's operating from a "what's mine is mine and what's yours is mine" mentality.