Mind vs Heart (Part 2)

Would like to touch on this topic again.

Ever heard of this old song, 'You will always on my mind' by Willie Nelson? I like this song very much and i believe the boy band, F4 did a remix of this song not too long ago.
Would it be apt to sing, "You will always on my heart"? or better still "heart and mind"?
Which is more important when you say this to your loved one, heart or mind?
Often, one would say, you are heartless and not mindless, while a person is out of the mind and not heart.
People would say, the heart is more important but what if you don't have a sound mind

Food for thought ...............
I am always thinking of you in my mind and have you in my heart.