Singer Charlie Puth announced the title of his newest song on Instagram Monday. The song is called "I Warned Myself" and Puth plans to launch it on YouTube on Wednesday. "'I WARNED MYSELF' IS OUT WEDNESDAY," Puth's Instagram post read. "THE MUSIC VIDEO COUNTDOWN STARTS AT 8AM WEDNESDAY ON YOUTUBE." ​ This will be the first of three songs Puth announced on Twitter last week. "Since everybody is asking....I am ...