There is plenty of nudity and sex from Lizzie and unnamed extras. There is even cunnilingus in close-up (see #8 below), although Jon Bernthal actually has his nose in what appears to be Lizzie’s merkin rather than her actual fun stuff.
Lizzie:
UPDATE: Based on the comments, I looked at Lizzie’s crotch under a magnifying glass, and it does appear to be digital blurring rather than a merkin. See below:
