Like this, there's nowhere to go but down, deeper into a sea of pleasure. It feels like it goes on forever, time stretched out like taffy, sweet and soft. His moans are deeper, like this, body clearly growing tired after everything else and even without the collar, he'd be likely to be more floating, pleasure for pleasure's sake without trying for a goal at this point. With the collar, it's almost like making love to him while he's asleep, everything smearing together, dreamlike and lovely and slow.

When he finally does shudder apart, it's without any change in his own pace, any self-pursuit, and so it's likely a surprise, just a cresting of one wave a bit harder than the others. And once again, there's no move to stop Phillip from doing whatever he wants in the aftermath-- maybe less so now with the way he goes so very relaxed and pliant under him.