Having Jack as one of the final couple in the last book after being introduced to him in the first was a very satisfying pay off. I felt like I really had a handle on his character and really enjoyed his development. This book was a good conclusion, although the pacing could have been smoother, but I'll be honest I just loved seeing the six of them interact. Like the wrapping up of the plot was good but I just wanted to see more of them in their day to day life like it was so much fun.