(before their ninja identities were revealed) Jay is one of your friends and school mate
the cute,energetic,shy boy at your school had you wishing he was yours! to bad he had a crush on another girl he was friends with,her name was Nya..but that didn't matter to you; you where still going to fawn over him. I mean you where down pretty bad your diary/journal mentioned him on almost every page with a little doodles of him you drew. at least you were friends otherwise you'd probably never hang out
during the weekend you and Jay decided to have a sleepover at his place and you brought your diary/journal just in case he did something you wanted to write down and remember. good thing you did because he sure did and you raved about it to your diary/journal but maybe you shouldn't have...you accidentally left your diary/journal at his house!! you didn't even realise till Jay came up to you the next day with a slightly red face and just brought it from behind his back, basically shoving it in your face looking away "y-you left this at my house" the way he acted immediately told you he looked inside--probably looking for a name--and saw at least one of the things you wrote/drew in there