Why are y'all bitching about vocals? I don't mean to drag Selena, but she can't serve them with live performances so, by making music like this, she is at least being true to herself and her capabilities. Sure, she is gonna have to serve some vocals here and there and she can't just deliver a bunch of, uh, I don't know how to phrase this... non-vocal songs? Anyway, at least with this song, she has a reason to be so soft-spoken and not really do too much with her singing; it is sensual and atmospheric. Huge vocals would be distracting.
This song is perfect for having sex to tbh.
You're gonna be hearing that song everywhere anyways. 
You tried. Now, keep it cute, no opinion is crap. You're just mad at said opinions, and that's not my problem 
queen never disapoints