Bittersweet is an out and out romance with maybe an overtone of paranormal. The problem I had with it was that I wanted more. The main characters, Harrison and Piers, were nicely fleshed out and nicely unique in the world of m/m romance. (I was especially pleased that Harrison had a 'lightly furred' chest. I know, shallow, but it tickled - oh, bad pun - me.)
There was a great plot here but I wished it had been filled out more. I wanted more interaction between Harrison and his son, I wanted more of the battle between Harrison and his soon-to-be ex-wife. I wanted to know more about Piers and the relationship he had with his best friend, Gerard. Okay, I just wanted MORE.
The love scenes were hot - there was one kiss especially that was really, really well done - and despite the straying into purple prose' territory once in a while, I quite enjoyed them. All in all, a nice read for a quiet evening, but again, I think I'd have enjoyed it more if there had been more. That being said, Madeleine Urban remains as one of my most very favorite m/m authors.