End of a Series

When I first started writing my Roadtrip Romance books, I was only going to write the one. As I sat at a writer's retreat, chatting through the plot with a friend, she said, "You could turn it into a series." 
What? No. I didn't write series. I wrote stand-alone books and was quite happy doing so.
But the idea was there. And it wouldn't leave me alone.
You see, the first book has three friends: Katie, Bree, and Skye. And while the story is mostly about Katie, I was growing to love Bree and Skye too, and wanted to know what happened to them.
Thus, a series was born. This has been an interesting process, to say the least. I ended up completely rewriting the second book to have my couple broken up instead of on their honeymoon. And Skye ...
Well, Skye was the one I wasn't sure about when I started. After all, in the first book, she's rather flighty and almost mean at times. What could make her that way? How could I possibly redeem her?
But after sending her to Colorado for the summer to work in her sister's wedding shop (a job she doesn't love), and introducing her to Benjamin ... well, I hope you like what happens in the third book.
We're just over two weeks from release. The series is almost complete.
Have you enjoyed hanging out with characters you already knew from other books? What makes you love a series? Or do you prefer stand-alones? What are you hoping happens in Skye's book?
​Skye Jones has one goal for the summer—keep her father from taking away her convertible. That’s the only reason she’s agreed to work at her sister’s bridal shop in Boulder, Colorado. It will buy her some time to figure out if there’s a non-boring job out there. Why else would she have anything to do with weddings when she has no interest in marriage?

Benjamin Smith can’t quite figure out how he ended up a groomsman in two different weddings over the summer, but with his sister and a cousin both getting married, he’s spending a lot of time at Happily Ever After events. Falling for a blonde with no dreams of settling down wasn’t in his five-year plan, but the more he sees Skye, the more he wants to figure her out. But all she sees him as is a boring attorney and her complete opposite.
​
Romance was supposed to be for Skye’s friends. But Colorado might hold more than she knew she was looking for.