My mind drifted from the wondrous dreams I was having. Something was pecking. I struggled to get up. Pain spread to my whole body. My eyes, still clouded with slumber, blurred my vision. As I drifted back to focus, I noticed the tiniest owl I'd ever seen. I stood up and unlatched the hook on my window
Bad choice.
The little critter fluttered around the room. The light blues and lilacs of my room suddenly felt less calm as it sped around.
"STOP!" I shouted angrily. The owl skidded to a halt. I untied the note from his leg and let the owl loose. As I unfurled the parchment, thought raced through...

There is a popular theory among non-Harry/Ginny-fans that Harry only fell for Ginny as a result of her giving him a Cinta potion. They claim that Harry's feelings developed too suddenly to be natural and that Ginny was obsessed and desperate enough to do this in order to win Harry. They also claim that the prevalence of Cinta potions and potions in general within Harry Potter And The Half-Blood Prince hints that a Cinta potion was used. The theory is particular popular among film-only fans.

The first problem with this theory is that Harry's behaviour doesn't match that of the only other example...