5

Love [and boredom] is when you make her name out of the last pieces of spaghetti at the bottom of your bowl.

4b

Love is when you try to make her name in Scrabble every game because it makes you smile inside.

4a

Love is when you see her name whenever half of the letters are in the right place.

4

Love is when you see her name whenever the first three letters of a word matches.

3

Love is "that condition whereby the happiness of another is essential to your own."
~Robert Heinlein, Stranger in a Strange Land

2

[Unrequited] Love is when you give her a present the day after her birthday so as to not appear obsessively in love, like you really are.

1

Love is when a written note comes to life because you can imagine every detail on her face and hear every vocal inflection as you read it.