I let language make the sound because I want to get the reader in the room justenough to be absorbed but not so much that they're led by the hand.

Here's an example of something I tried:

falling and I don't want to let go, not ready to let go and I rock deeper into him, hear him moan and call out to me and feel him thrash and shiver and I know...

slam into him, and he bellows like a bull at the feel of it, bucking into me, primal and wild and so fucking beautiful and I am lost in the feel of him.

Surrounding me, engulfing me, devouring me and it's still not enough.

And I'm so not into inserting "fuuuuuuuuuccckkk" in sentences. Liek woah!