Again, I don't think casual sex goes against the grain of ENFPs at all. Again, there are two camps. Some ENFPs would be considered hyper-sexual and are promiscuous --> lol at old school world. Others look at sex as an option only when there are serious feelings and a relationship involved. Different strokes...that sounded wrong. I know both types both IRL and on this forum. Also, casual sex is not necessarily *meaningless* sex.
I've thought about what you've said CzeCze, and I think you're right. So I'm going to moderate the opinion I expressed in my earlier post a bit.It does seem that ENFPs seem to be either:
- very sexually active with the newest and shiniest (and prettiest) thing they encounter, or
- they tie their feelings about sex up with concepts like soul mates.
Perhaps the underlying commonality to these two, seemingly opposite positions, is that
ENFPs approach their sex life with purposefulness.
Take for example an ENFP male I know who is @35 and a reasonably attractive guy. He was a serial monogamist in his 20s. But at some point, he decided he was going to make up for his youthful propriety by "playing the field." He didn't just follow his penis around like a horny teenager. He made a very conscious choice to experience as many women as possible while he was in his mid-thirties. And, then AFTER he decided how this fit into his bigger plans, he proceeded to nail any good looking chick that would yield herself to him.
And even Esoteric Wench (who falls into the "have-sex-with-your-soul-mate-camp") has to admit that the one sleep-with-a-guy-on-the-first-date experience she had, was very much a conscious and premeditated choice. I had just gotten out of a very bad four-year relationship, and had concluded that maybe I needed to try something new since my previous dating experiences didn't seem to be getting me anywhere.
So I decided to take a chance when that good looking jazz musician/potter with whom I had mutual friends introduced himself to me as I sat by myself in a bar reading a book of poetry while waiting for my friend. I said to myself, "Well, Esoteric Wench, you've said that you wanted to try some different approaches when it comes to meeting men. Why don't you do what you swore you'd never do. Sleep with him tonight and see what happens." So I did. And, he and I wound up dating for eight wonderful months.

(I don't think I'd do it again, but I'm glad I did it once.)
But I'm digressing from my original point, which is that sex is filled with meaning for ENFPs... just like almost everything in an ENFP's life. I think seeking out the meaning in our actions is at the very core of being an ENFP. But what I forgot (and that CzeCze rightly pointed out) is that some ENFPs choose to have casual sex.
But casual sex is not meaningless sex if it is a deliberate and meaningful choice to pursue such encounters. Choosing to have that fling can be a purposeful choice.
It is the idea of having sex with an absence of meaning (casual or within a committed relationship) that really makes my stomach turn.