I've only dove with other guys...except, in my OW cert class, the only other two people were girls. One was married, the other was the married gal's younger sister. I had to buddy up with the younger sister for much of the class, I didn't care. If it annoyed me, it was only because I had read ahead and was much more comfortable not only witht he skills, but also just being in the water.
I don't care whom I dive with, as long as the person is nice and cool and stuff, I don't like to dive with jerks. I've got a good friend who is a professional ballet dancer, and I know that she is dancing with alot of guys. Alot of them. And they are wearing clothes that are as tight as a wetsuit, but not as thick. And there is no shrinking, so you can definitetly tell the guys and girls apart. Oh, and they dance close. Not to mention, there are many lifts and things where they get to have their hands all over her, if I had my hands there, I'd get slapped! We are kind of good friend, and we have talked, and I'm fine with what she does dancing, becuase it's professional ballet. If it was erotic dancing in a club, I might object
I don't think she would object to me diving with other females, but if she were along, say it was a beach dive, then she'd expect me to spend SI's with her, not with the other ladies. She'd expect that if I were diving with a guy too. She'd expect it if I were diving solo. She'd expect it if I weren't diving.
I don't think it'd be right for either of us tell the other "ok, here's a list of rules for you to follow." Rules are only there to oppress our inner "evil twin." Instead of rules, we do have spoken and unspoken agreements. That's what we need, and that's what I think Almitywife has, even though it sounds like she wrote ten commandments for her husband to follow. As long as the spoken and unspoken agreements ar efollowed, no one is upset, no one is hurt, no need for rules that just make you miserable trying to make sure you always have a dive buddy of the same gender.