How does the author use irony in the novel, The Thing About Georgie?

When Georgie goes to Andy's church on Christmas Eve and Russ is there, Georgie is uncomfortable because of the fact that it is different from his church. Russ, and the fact that he is spending Christmas Eve, with Andy because of his parents' concern for the baby show Georgie is a different light. Feeling threatened by things outside of his comfort zone, Georgie acts like a complete brat, and ironically, Georgie is notacting at all compassionate in a setting that is meant for compassion.