How does Peter feel about ender?

Peter hates his brother because he has accomplished what Peter couldn't. He is frightfully jealous (and I mean frightfully) of Ender's accomplishments, abusive, and threatening. Occasionally, we see something else come into the picture....... but only when Peter is celebrating Ender's failures (think about the section where the family believes Ender has been ousted from the program in the begining of the novel).