Very disappointed. I have enjoyed this series for the most part, and loved books 3 and 4. I can't believe I held off on reading Trey's book for so long, then ended up experiencing so much letdown. 
 I know that polyamory works for many people and that it can be a legitimate form of relationship(s). I have a couple of friends who live this way, so I've seen it firsthand. 
 Unfortunately, it's rare that a book is able to convey this type of relationship in a believable light. The closest I've seen was in the book Rough, Raw, and Ready. 
 Mild (nothing major) spoilers ahead. 
 Why Double Time did not work for me : 
 1. The insta-love was off the charts. I'm not anti-insta-love. In some cases, it's written fine. But we've seen it before (and done better) already in book 1 of this series. Considering Trey's backstory, it felt very bizarre that he fell in love with not only one, but TWO people so quickly. His journey to healing was too easily solved by finding Reagan. 
 2. I didn't believe that the answer to Trey's heartache was to fall in love with two people. This story would have been more believable as a m/m book. Just because Trey is bisexual, it shouldn't have meant that the only way for him to be happy was to fall in love with both a man and woman. 
 If he wanted to live a poly lifestyle, I would have preferred him to have known this ahead of time and gone into the relationship with the female having her eyes wide open. For him to get involved with a woman, then tell her after the fact that she did NOT complete him - it made me shake my head. There are very few women people who could deal with being told that they are not enough for someone. The way that the situation was handled was the complete opposite of tactful. 
 3. Trey didn't have the same uniqueness that I saw in the former books. He had lost some of his zing. I was completely bored with him outside of the sex scenes, which was not how things were before. Trey used to be my favorite character. 
 Things that worked for me : 
 Nothing. Not even the sex scenes. Something about Reagan bothered me (couldn't put my finger on it), so I couldn't even get into her head for the sex scenes. 
 I'm sad that I had to end an enjoyable series on a sour note. Ah well. I've been trying to skim Sinners at the Altar and am not getting into it. Maybe I'm over the Sinners now. I don't even know why Trey's getting another book after this. Supposedly, his story wasn't wrapped up, but I'm pretty sure that I don't much care what happens next for him. 
 I might still read Dare's spin-off book though. I do heart Dare.