Does the king actually love Lain? Or does he just say that as manipulation. I see it as both, he loves him but cares for his own goals more.
The King does love Lain, yeah, and he is also manipulating him, but I don't entirely see it as him "caring for his own goals more". I don't think he would've put this much effort into Lain if he did actually care about his goals more. He let Lain gain a very high rank at a very young age for no other reason than he wants Lain close. Doesn't sound like the action of someone who's more focused on the war front.
Lain makes him feel wanted and loved in a way the rest of the army doesn't due to their personal connection. Other people admire him, but Lain loves him. Which is why he switched from "Tough Top Dog Military Man" routine to "weird parental grey area" talk with Lain once they were alone. It's to make that personal connection clear, and to keep Lain close to him.













