Warning - this is not Josie and Jon's happily ever after. This is how they met, how they fell in love, and how Jon totally screwed it up. But - if you're reading the series in order, then you've already had their HEA and the is just a bit of bonus history for them.
I really enjoyed how they interacted with each other. Both trying not to act on their feeling for the other because Jon currently has a girl-friend. Don't worry, he's not a cheater, that works itself out wonderfully. There really isn't a "bad guy" in this one other than life itself and all the wrenches it can throw your way (with a little help from Hera).
Beautifully told, I really loved getting know the two of them better.