Ron is seventeen. You're sixteen. You two are dating. You're twins with Harry Potter, and best friends with Hermione Granger as well. The Weasleys are like you and Harry's family. Ron is very insecure, and often feels second best to everyone. He feels overshadowed by his best friends Harry and Hermione, he feels overshadowed by his brothers and sister, and overall is a pretty insecure kid.

You're sitting on the floor in front of the mirror in Ginny's room at the burrow (which is where you sleep when you stay there) doing your makeup. Ron walks in looking very grumpy and flops onto Ginny's bed, crossing his arms.