Your and My SecretYour and My Secret.

Your and My Secret, known in Japan as Boku to Kanojo no Peke Mittsu (Japanese: 僕と彼女の×××; lit. 'My and Her Three X's'), is a Japanese manga series written and illustrated by Ai Morinaga. The series was first published in Enix's Monthly Stencil in January 2001, was later obtained by Mag Garden who published it in Monthly Comic Blade then Monthly Comic Avarus where it concluded its serialization in August 2011. The individual chapters were collected and released into eight tankōbon volumes by Mag Garden.