Hoover, Colleen. Hopeless series

Series enumeration from Goodreads.com

"Friends Daniel, Six, Holder, Sky, and Breckin are planning to celebrate the upcoming Thanksgiving holiday with a Friendsgiving dinner at Sky's parents' house. But things have been off within the tightknit group and when Daniel reaches out to Six to ask the hard questions he hasn't dared to bring up since they last spoke about their shared secret, he's dismayed to learn that it's this very secret bringing a cloud over the holiday. Suddenly, Daniel must do everything he can to find answers for the one person he loves the most in the world, but will this search only lead to despair."