Okay, explanations. Apparently I confused some people with a bunch of stuff. First of all, I'm not sure why I chose to accelerate the war. I guess I just didn't think the most obvious choice would be to just get Mukuro to give Hiei a simple order. It just totally went over my head and I didn't think about it. Second, I didn't intend for Hiei to be "I wanna keep you both". That was a mistake on my part if you took it that way. However, Hiei was planning on trying to be with Kurama and to see if he liked being with Kurama better than being with Mukuro. I know that sounds absolutely heartless and cruel but that's what he had in mind. If he and Kurama worked out Hiei was going to break up with Mukuro. And the reason he doesn't just sit down and talk with her is that he can't, for the story to go and end the way I want it to. Things can't end peacefully between the two, at least for a while, for the plot to continue. I can't get any more specific than that without spoiling the whole thing, but you get the basic idea.
And to answer a few more comments, Hiei can be a selfish asshole. That's just his personality. We all know that. He isn't some seemingly cold loner with a candy coated, fluffy center. It's Hiei. He really is a cold-hearted loner. He is selfish sometimes, he does only think about himself sometimes. Think about it. With the exception of Yukina all he's ever had for most of his life was himself to worry about, himself to care about. So, I personally have no problem believing he would do something like that for his own happiness, and only think about Mukuro later on after it's happened. (I'm also changing a few things about the next chapter). Like I said, I know it's horrible, but Hiei is a youkai, not a saint. Also, the only reason he thinks Mukuro is a bitch is not because of his infidelity, but because she insulted Kurama the way she did. Hiei is kinda in the mindset of this is between me and you, I made this decision, leave Kurama out of it. As for the rest of the rude comments about Mukuro, hell, half of that is just my opinion about her.
Am I making any sense at all? Tell me if I managed to clear up anything at all, please.