First of all Selena and Demi were on Barney and Friends. They started when they were 7 years old. Selena met Demi at the auditions and bothed loved singing. At rehersals, they played games like celebritys. When they rehersersd, they messed up the lines and laughed for a very long time. When they were alone Selena asked Demi if she wanted to be her friend and Demi 说 yes. For the rest of the show, they were 老友记 and then became bffs. Their Mums met and they also became bffs. And thats how Selena and Demi became friends!