In Pink by Charity Parkerson

Adam wants to think of Pink as a younger brother, but he isn’t. Pink wishes Adam would get out of his head, but he won’t.
Since getting adopted and going to live with his new family, Pink’s life has turned around in all the best ways. He’s made friends. Pink finally sees a future for himself after years of living a nightmare. The only hiccup is the family butler, Adam. He’s more like family than an employee. Pink can’t see him as anything except his. It’s an unfortunate situation all the way around.
When Pink first came to live with them, Adam honestly believed the love he felt was the brotherly type. Now Adam can’t stop noticing Pink’s gorgeous eyes and smile. He can’t stop wanting to kill everyone Pink dates. It’s a conundrum. He’s sure it’ll pass.