Oh, I totally wrote a sequel to that fic (which could have been titled: 'Aliens made you do it the first time, but the second time was all your fault') in which that exact thing happened (yay! threesome! with sex toys!).

Unfortunately, it was lost forever when my laptop was stolen a few months ago, and I just couldn't bring myself to re-write it. :(

Maybe I'll get to it someday...