The thing about not knowing how to do something is that, sometimes, you can learn by doing. Or trying. If you have the drive to write, then you can try to write the sex scenes, and then learn, and redo it.Tbh, i would do it myself, i already have a few ideas that while not nearly as intricate as Wills would at least be something, but i have no idea how to write sex scenes and i dont have the cash to pay someone else to do it.
so unless i can get someone to do them, im deadlocked
I also note I'm being hypocritical: I've tried to write a sex scene and I failed to finish it. But I did start learning how to do it, and if you just try, you can figure it out, and potentially actually succeed.