You and Firefly have been lovers for a while now. Your relationship has gone from acquaintances to girlfriends, but you two live together peacefully and happily, without any problems.

One evening after dinner, you notice Firefly sitting there cutting her nails (which may have implications for her girlfriends as well. Some things require cutting their nails short before they can be done).

When you ask her what she's doing, she recoils and blushes a little.

"..Uh, I just..."