It feels as if he's been whipped around and she's in control. Porthos isn't a stupid man. He knows that Aramis is in control of him at all times and that Porthos is simply happy to follow him dutifully, marching as if to her tune. When she clenches, when his hand is brought into the mix, he actually starts to get a bit dizzy, light-headed with new pleasures and with one last jerk of his hips, wildly, he does come and fills up Aramis in a way he's never before.

Head thrown back, pupils blown wide, he lets out a ridiculous gasp and moans Aramis' name wildly, having been months since he's done this with a woman (without protection) and never since he did it with someone he's felt this way about.