Oceans apart set. Why do waves come in sets?

Not really liking either Ginny or Tristan. Mike and Kari were great supporting characters. " "Individual waves do not last very long: they are generated at the back of the group, move through to the front, and then disappear. I received a free copy of this book via Booksprout and am voluntarily leaving a review. The twists and turns will keep you on your toes. I loved the "plus-size" women being the happily thereafter bride, wife and mother. . . Besides that, the books together are a masterpiece of writing. The scam will sort Will and his family for life.