Sonny and Chad were in a relationship for a while but then broke up in "Sonny With A Choice". This is because when So Random won the Tween Award, Chad wanted to get things back to normal. Sonny thought he meant he would stop going crazy but instead he ordered a recount of the votes. It turns out Mackenzie Falls won. Sonny was so disapointed with Chad that they broke up.
Sonny got annoyed in "New Girl" when the cast were trying to think of a sketch and kept on making Chad part of it. Sonny bumps into Chad and he says "I think I left my sunglasses in here from when we were going out". Sonny then says "if you had only given the sunglasses there moment in the sun then maybe they wouldnt have broken up with you".
Sonny gets upset with Chad when she finds out in "My Two Chads" that Chaz Milton Looper, Chads stunt double has been on all of their dates that seemed slightly dangerous to Chad. Sonny broke up with Chad but then forgave him when he rode a bike after which he couldn't do and fell into a bin.
Chad and Sonny are known as Channy. Taking the Cha out of Chad and the nny out of Sonny.
Chad has had many lovers such as Portlyn and Penelope. It is obvious that Chloe likes him aswell, but he has only ever gone out with Sonny except for Chloe on the show.
Chad often calls Sonny "Ma Lady" and puts his arm round her. It is rumored that Demi Lovato will come back to sonny with a chance in season 3 or four.. but no one knows for sure.