Sentence 1: Jon's friends told him he had a secret valentine. 
 Sentence 3: His friends said she will come to his house on Valentine's Day 
 Sentence 4:  On V-Day, his friends came to his house and revealed it a prank 
 Sentence 5:  Jon angrily kicked his friend out and ate candy by himself 
 Option 1: He got excited and bought flowers for his secret valentine. 
 Option 2: He got excited and bought chocolates for his secret valentine.