It'd be really helpful to point out where you think this is an issue, it'll make it noticeably easier when I'm rewriting.
Okay, I don't want to leave a bunch of really wordy comments to explain what I mean, so I'll give a couple of examples here. I didn't actually notice as much on second look, so don't worry really.
Anyway, for example, this bit:
You're surprised at how good Verusha is at oral. You're getting closer to your own orgasm with each second. At this rate, you're going to cum soon.
{if dick: A surprise prostate massage is enough to make you bust your nut down Verusha's throat.
Since you're in the middle of a sex scene, I don't think there's any reason not to add an extra sentence or two about her shoving a finger up your butt. In general it's fine to elide certain events when writing, it usually helps to keep things moving, but, and we're going into my personal opinions here so take it with a grain of salt, I think the best smut has a kind of flow and build to it, and can even feel a bit drawn out at times. Here, it feels (to me) like you've kinda skipped a step.
As an aside, I do appreciate that that bit is partly just extra flavour for dick-havers, and that writing a single scene for both is more involved.
The same goes for her orgasm, where you go pretty much straight from her starting to fuck properly to her cumming in one sentence. Sure, time is passing, but even if the action isn't changing, a bit of extra description can actually give a better feeling of that than just stating it does.
I'm sorry, I feel like I'm being a bit harsh here, but the good news is that in the end I'm basically saying I want to see more of your writing!