What is heart?

What is heart? 
A body part, 
where feelings start, 
when you are in love. 

What are eyes? 
Where looks arise, 
and your tear dries, 
when you are in love. 

What is need? 
A desire indeed, 
gives power to plead, 
when you are in love. 

What is pain? 
A sense of strain, 
precious thing to gain, 
when you are in love. 

What is kiss? 
A sensational bliss, 
something you can't miss, 
when you are in love.