xhonzi said:

Here are some snippets (all PG-13 movies):

Green Lantern:

We demand one chaste kiss between hero and heroine, but no funny stuff.

Captain America:

Young Steve's Army confidante both before and after his transformation is the sultry Peggy Carter (Hayley Atwell), whose full red lips make her resemble a classic military pin-up of the period. ... they grow close, but only PG-13 close, because Marvel has apparently determined that fanboys find sex to be icky.

Rise of the Apes:

Whether she becomes Will's surrogate wife is an excellent question; the movie displays the usual PG-13 shyness about intimate details;

And a bit of a stretch: X-Men: First Class

At least all the X-Men are old enough to see an R-rated movie without adult supervision. Not that "X-Men" is R-rated; god forbid that a comic-book movie should turn away a single eager ticket-buyer.

Winner winner, chicken dinner.

And those are all of the reviews I read today. I stopped reading Ebert years ago, but what's happened to the man? He seems to be very upset that PG-13 ratings are standing between him and seeing famous boobs.

I think it's partly the annoyance of the obligatory chaste romance in these films, not that the romance itself is chaste.