The human heart is just a muscle. Having someone else's heart is no more going to effect your emotions than having someone else's kidney, or eyes, or any other transplanted organ.
There is no evidence for a soul, and the advocates for its existence in this thread can't even seem to agree on what it is. There is no reason to think anything about our consciousness is supernatural, or will continue after the brain ceases to function.
the heart is not just a muscle/pump, i thought it has a unique relationship witht he brain, and recieves emotional information.
maybe this website is wrong, but they claim to do much research in this area.
http://www.heartmath.org/research/research-overview.html
"Heart–brain interactions:
The heart and brain maintain a continuous two-way dialogue, with each influencing the other's functioning. It is now known that the signals the heart sends the brain can influence perception, emotional processing, and higher cognitive functions. Our research is exploring the influence of the heart's input on brain activity, emotional perception and experience, and cognitive performance. We have shown that emotion-related changes in the heart's rhythmic activity are correlated with distinct changes in these variables. Our findings also point to a link between positive emotions and improved cognitive functioning."
peace.