4:02 John Mayer - Half of My Heart (Official Video) 4:45 John Mayer - \"Half of My Heart\" Live Acoustic (Excellent Quality) 3:58 \"Half Of My Heart\" - John Mayer [LYRICS] [OFFICIAL] 4:11 John Mayer - Half Of My Heart (featuring Taylor Swift) [HQ] 8:58 John Mayer NY, Beacon Theatre - 11. Half of My Heart 4:22 John Mayer - Half of My Heart (Tokyo Acoustic Version) 4:18 John Mayer - Half of My Heart (Acoustic) 3:25 Josh Makazo - half of my heart (Orchestral Version) (Official Visualiser) 7:12 Norah Jones & John Mayer - Don't know why-Wonderland 4:39 Savannah Outen and Boyce Avenue singing \"Half of My Heart\" by John Mayer and Taylor Swift 5:31 John Mayer - Heartbreak Warfare Acoustic Version.wmv 3:52 John Mayer - No Such Thing 3:52 John Mayer - Say (Official HD Video) 9:54 John Mayer NY, Beacon Theatre - 16. Friends, Lovers or Nothing 6:23 John Mayer - Live on Letterman[11/19/09] - 3. Half of My Heart 4:05 Half Of My Heart - John Mayer ft. Taylor Swift @ Jingle Ball NYC 12/11/09 4:43 JohnMayer Half of my Heart @ Pinkpop 2014 4:12 John Mayer - Half of My Heart, Vancouver BC 4/10/2023 Live 3:54 John Mayer – Half Of My Heart (Lyrics) 3:54 John Mayer - Half of My Heart 4:09 John Mayer- Half of My Heart - Acoustic (Mix 100.7) 9:03 John Mayer - Half of My Heart 4:05 Taylor Swift - Bad Blood ft. Kendrick Lamar 4:12 Taylor Swift - Everything Has Changed ft. Ed Sheeran 3:38 Taylor Swift - no body, no crime (Official Lyric Video) ft. HAIM 4:37 Half of my Heart-John Mayer(Rock in Rio) 6:54 John Mayer - Half Of My Heart [ Live Today Show 07/23/2010 ]