Charlie's Rainbow (Rainbow Key #2)
Victoria Sue

Noah is also running, even if he doesn’t realize it, and the guilt he feels over his brother’s suicide chases him no matter where he goes. When he meets and falls for Charlie, he finally thinks he might have the chance to make a home and a future with the adorable man, except he doesn’t realize that the secret that Charlie is hiding is the one thing that he fears the most.
And not even a chance of mending their future can heal the scars of Charlie’s past.