Promise Me — Kelly Walker

Self-professed Harry Potter addict and math genius River Jacobsen can count on one hand the people who matter in her life. Really, it's just Dean, the boy who loves her despite her odd habit of counting everything around her when she needs to quiet her mind. When Dean promises her forever she never imagines it will be a lie.

After Marine hacker Ian Maclean is mistakenly declared dead by the US government, he's happy to correct them the moment he escapes captivity. He wants nothing more than to get home to the wife he left behind. Discovering she's been cheating on him since the moment he deployed wasn't in the plan. Devastated, he walks away from everything, even his name.

With the futures they were counting on destroyed, Ian and River find themselves starting over. Ian reminds River of things she'd much rather forget, but pushing him away is harder than she expected. Ian wants a second chance at happily ever after, but the more he gets to know River, the more he worries she isn't trying to figure out how to live again, she's figuring out how to die.