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1. Undefined by delmartian

   Fandoms: Ben 10 Series  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • F/M
   • Complete Work

   18 Jan 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Ben Tennyson & Gwen Tennyson
   • Ben Tennyson/Gwen Tennyson
   • Ben Tennyson
   • Gwen Tennyson
   • Angst and Romance
   • Teen Romance
   • Friendship/Love
   • Cousins

   Summary

   Ben kissed Gwen first without explaining why - and it went badly. Months later, after Phoenix and the aftermath of Vilgax, they decide to be a couple. Trouble is, neither of them knows what that means in middle school. Tween romance, awkward feelings, locker conversations, math class daydreams, and one lingering question - Is there something Ben was supposed to say first?
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   Language:

   English

   Words:

   4,229

   Chapters:

   1/1

   Comments:

   5

   Kudos:

   17

   Bookmarks:

   4

   Hits:

   569