In the end, lovers naturally part (6)
I believe the answer is:
snatch
'naturally part' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe you can see a link between them that I can't see?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for snatch that I've seen before include "E. Mediterranean nation" , "Grab, seize eagerly" , "Grasp hastily" , "pluck" , "American kidnapping" .)