Top 20 Relationship Songs of 2011

Clockwise from left: The Boston Globe; Getty Images; Getty Images; REUTERS
With Valentine's Day right around the corner, the Boston Public Health Commission has delved into the meaning behind some of 2011's most popular relationship songs. Here's a listen through its top picks of unhealthy and healthy songs.
Clockwise from left: Vocalist Gary LeVox of Rascal Flatts, Drake, Blake Shelton, and Avril Lavigne.