Totally Raunchy

I have just read the raunchiest book ever. So raunchy, that I dare not repeat the name in fear that another breathing human might know the trash I read. The plot: A man and woman in a long term relationship go to Cabo for a weekend with the man's business partner. The ending: All three live together happily ever after. Graphic, dirty, and at times I laughed right out loud. This author had some imagination! And just a little FYI; I think most of those positions were impossible. No one bends that way!