If you, for example, ever been madly in love with a person to the point of obsessing about them, and feeling 'heart ache' over their absence ... if you have ever had to mourn the death of a loved one, or their parting away ... pay attention to how you feel at that very moment. It really is that simple; no need to philosophize over something that basic.

It doesn't even have to be a strong emotional event; you can find various points in Jesse's posts that are indicative of love, such as the "dull ache":

> Each time I see a happy couple talking in a coffee shop or a “normal family” playing, it feels like a dull ache.