I think the title will get people's attention who are interested in sex, but once they read a description of the book (assuming one is available before purchase), they will lose interest when it isn't what they're looking for. People who are looking for poly information probably wouldn't even be very interested because of the sexual connotation.
Sure, a title that grabs people's attention is important, but if the book doesn't follow through with the promise the title makes, it doesn't do anything to satisfy the customer.
Best of luck to you and your friends. I won't be reading the book unless I find it somewhere for a dollar or less (I'll read almost any book I can buy for a dollar or less