the heart never lies?

Is it a saying that the heart never lies?

When work stress was on, my heart rate

(average resting) was 74,  When I visited

family, it was 78.  When I got back home

and was on vacation, it was a better 71. 

When I sang with folks at the pub today,

it was 60 bpm.  Maybe my heart is

deceitful and desperately wicked, but

I think it loves music an awful lot.