Mark and Mary's meet-cute takes place at a community medication shop, where she is hectic purchasing a pregnancy examination, as well as he needs to make an initiative to remind her they met in university. After asking her out, he accompanies her as she takes the test, and also upon it revealing unfavorable, she accepts a date. One year later on, they have actually dropped deeply, passionately, head over heels crazy, and their whirlwind love results in marital relationship. So when Mary suddenly demands they open their partnership to "ethical non-monogamy", Mark is taken by surprise, but consents to try it. Which's where this tale really starts.