In what ways does Pip seem immature?

Orlick begins hitting on Biddy. Although Pip has just told her of his undying love for Estella, he is still jealous of Orlick's advances.

pip is thought of being immature due to his ignorance of the fact that miss havisham is not his benefactor , yet he still keeps in mind that miss havisham is his benefactor to raise pip to become a gentleman to marry estella , his love , even though miss havisham characteristics dont show that ,hence , she adopts and raises estella to become a cold woman that breaks the heart of every man who fals in love with her .