You need too get all items in 2013 valentines day.
Chat with our AI personalities
You need to gather 38, 000 cheese. For a list of all the titles you can check out cheeseformice.com ^^
Collect 500 cheese first. *Note: Getting cheese first only counts if you are playing in a room with 11 mice or more.
just collect the cheese the more u collect the title will unlock but notice this the heart on your screen on the right side in the bottom is the collected title
If you are wondering how to change your title from fluffy mouse to "yeah cheese" or something like that type in /title then in gray it should come up with all the titles you have unlocked then type in /title (then the number by the side of the name) there you are example: /title 57
type /title and select the title you want. Then type /title (number of title you want).