I found a video about what happens in our brain when people love in here. It is a fascinating look at how love works. Anyways, here is the video:
Vodpod videos no longer available.
She describes love as an addiction, a craving, like hunger and thirst. I would agree with that. It is uncontrollable, and a person can’t just stop thinking about a person at their own volition.
Who you have romantic feelings for is mostly not a choice.