Too many things wrong with this movie...
First, what teenage or any grown straight man (especially in the Marines) listens to Selena Gomez, Miley Cyrus, Demi (maybe I can see Demi Lovato and Ariana Grande)??? I can totally vision them with guns in their platoons jamming out to "Love you like a Love Song".
Plus, when he ties her to the the beg she is totally capable of pulling her mouth to where her hands are so that she could have took the scarf out of her mouth.