As a cheating husband in a relatively happy marriage, I can only say that I love the people I see; I tend to focus on one person at a time, because sex gets better the longer you know someone, in marriage and out. It's bliss, and it's an intimate connection in the moment. The only problem is that it's easy to get attached to the providers, being as everyone is generally showing the best of themselves, and... of course, you are having sex, which tends to promote connection in big way. As Seinfeld said: "I think that by sleeping with her, I gave her the wrong idea"...