1. The Fireworks Stage: every time you see him/her, you feel like there is a firework in your belly going off.
2. The Pizza Stage: every time you see her/him, it’s like eating a piece of yummy pizza
3. The Cat Pic Stage: every time you see him/her, you feel good like clicking on funny cat content
4. The Toilet Paper Stage: you are happy that s/he reminds you to buy toilet paper