I Think I Love You by Lauren Layne

Hunter and Brit have a very open relationship, Brit is like an open book, even those times where I'm sure Hunter wished she wasn't:
             “Um, because my eggs are rotting?” she said, waving a palm in the general area of her midsection.
             Hunter winced. “Oh God. Never mind.”
Does Hunter get jealous? No, not him, not at all, “forget the da*n mock-ups,” he snapped, turning back toward her and crossing his arms. “How about you tell me what the h*** you were doing fluttering your eyelashes at Bradley effing Calloway?” I loved this book, I fell in love with Hunter.