[imperfect_cupcake]

Oh completely. I have had some incredibly close and most trusted best mates that are butches over the years.
That said, I also occasionally screw my friends. But it doesn't matter if they are butch or femme or a burning shrub if it's just a friend-frolic.
As one of my older female friends said as I was growing up "if ya can't fuck yer friends... who *can* you fuck??"
I tend to agree. But I grew up in a clique of people who all did this so it's pretty normal to me, the odd frolic with a mate. *shrug*

I also have had friends, real honest friends that we both know a relationship would never, ever work but when both single, the chemistry is good so we shag around a bit. But that's a *very* particular dynamic and rare.

And I have friends, butch, femme, just me, straight, heteroflexible etc... that I'd never screw. It would be too weird.

but I love them to bits too.