I think the problem with sex scenes, and particularly the act of writing them, is the balance between too much detail and too little. With too much, you get into the realm of making it silly and almost awkward (if not too detailed for your target audience). Too little and you run into it being viewed as unimportant (or even too lyrical/metaphorical if too much flowery language is used).
I've read very few authors who can kind of bridge this gap successfully and even fewer who can make it comfortable when listening on audiobook in your car.
I think the problem with sex scenes, and particularly the act of writing them, is the balance between too much detail and too little. With too much, you get into the realm of making it silly and almost awkward (if not too detailed for your target audience). Too little and you run into it being viewed as unimportant (or even too lyrical/metaphorical if too much flowery language is used).
I've read very few authors who can kind of bridge this gap successfully and even fewer who can make it comfortable when listening on audiobook in your car.