Heart break

Today ,I was coming home in the bus and i heard a conversation going on between a girl and a boy they both were fighting. 
Usually I Don't get interested in this kind of convo but the fight was kinda interesting.  They were couple (gf & bf)  fighting for some reason i don't know.  The girl had very shivering kind of voice seems she is upset and boy is also in a very sad mood. 

The girl keep resisting him and saying go away she is having headache,  but the boy standing beside seat of the girl was keep trying .
Then after some moment boy said delete my number and block me.  The girl I'll do that when i get home, but he insist to delete his number in front of him.  The girl blocked him , then she said now go away but still boy is not going anywhere.  They were keep fighting.

Morale: If you give more importance to someone than they deserve, you gonna face huge disappointment at the "end" (decided by her)