Saw this last night. Felt like I was watching a child molesters cinematic fantasy. I get what the film was going for (a blank slate's political, social, and sexual awakening after being unleashed onto the human world - it's been done - but that's fine. R-rated Barbie), it's just the first scene with Rufallo and Bella was so unsettling to me. The whole gag of Bella using juvenile code to refer to sex as if being coached to disguise the activity was also off-putting unfortunately.
The whole thing reminds me of those anime fans that try to justify their lust for what appears to be a prepubescant child dressed like 80s era Madonna, "it's OK, she's actually 400 years old".