You shouldn't make your friends jealous.
Patty is shopping for new jewelry for herself.
Patty wants to get something that looks nice on her.
Patty buys something modest for herself and doesn't call her friends to brag about it.
Patty buys something expensive and brags about it to her friends who can't afford something so nice.
Her friends compliment her on the jewelry, and everyone is happy.
Patty is looked down on for rubbing her purchase in her friends faces.