During Sunday's game versus the Pittsburgh Steelers, Jon Bon Jovi led New England Patriots fans in singing along to "Livin' on a Prayer." Although he is New York Giants fan, Bon Jovi is friends with Patriots coach Bill Belichick and watched the game from a box with injured Pats tight end Rob Gronkowski and Boston-born actor-singer Donnie Wahlberg. Watch the video of his sing-along below.