Reason For Hole In Heart Why Does Your Heart Skip A Beat And Why Do You Get Butterflies?

Why does your heart skip a beat and why do you get butterflies? - reason for hole in heart

Now I want to know if your heart really beat faster when you see someone you like or does it feel.

Also, why is your stomach feeling butterflies when he's nervous or what?

And if your heart breaks, why you feel a big hole there so bad?

Last question.
Why is the heart that it feels weird when you see someone you love? Why not another organization?
Haha.

Perhaps these things are only psychologically, but maybe there is another reason. I searched Google, but found no answers.