Through the movie the characters are naked. There is kissing and boobs can be seen entire movie

Several shots of a man and a woman fully naked.

Female and Male naked thru entire movie, with male butt, female breasts, and butt shown often.

Man and woman have sex. It's dark so there is not much nudity shown. There is moaning sounds. The scene is very brief as they are interrupted.

A man and a woman are attached to each other with stitches. The wound resulted from the procedure can be seen a couple of times.

A man is shot on his leg. With some blood visible.

The whole concept of two people attached together might be intense for some viewers.

Although the movie doesn't have too much gore, the very nature of its plot can be tense. Which relies more on being more psychological than anything else.