Yeah, probably very true of dating. I still don't know if I'd agree about having sex with multiple partners at once, but certainly spending time with them all to see who fits isn't a terrible idea, if you're dating.
But, that's why I never dated, and never would. It's not for me, and if I find someone, the fidelity isn't even called into question. If we click, we try it, no one else needs to be involved unless it doesn't work out.
Then again, I am of the 'fairier sex,' so this could have more bearing on my bent.