Mainly, what is the purpose of sex? What role does it play in a relationship.
Now, I personally, place a very low importance on sex- in general. Sex is there it's fun, it feels good, and can draw people together. These are all good things, no? Yes.
Now, some people stretch that into some sort of extremely mystical "only one person" thing. Sure, it's extremely mystical. And it's for that reason that I don't vote for the "only one person" thing, and no other reason.
I don't advocate promiscuity, despite a few adventures in that sound promiscuous (I'll come back to those later).
Think of it this way, sex has this wonderful power of making people closer. And I'm all about getting closer to people that I already care about. Not to say that everyone is appropriate for this thing. Some people don't dig that method of growing closer, and just because I want to grow closer with someone, that doesn't mean that sex is the only way to do it. But it is a way, and it can be, done properly, effective for it.
That's right, sex is a tool. Like a hammer, it is designed to a specific purpose, but that doesn't mean it has to be used to always drive in nails. That random liason (wasn't really random), that was what that was about. Using sex to do something else: in this case, get me to go waaaaaayyyy out on a limb.
So it's not all about growing closer. It's not all about pleasure, or adventure, what it is about, and always will be about is personal alchemy. It is to be always something to add to the mix to design a better self. So now we return, as I always tend to, to self-improvement.
La. Shoulda seen that one coming, no?