Vengeance by Sloane Kennedy

Memphis: At thirty-four years old, ex-DEA agent Memphis Wheland has lived, loved and lost…everything. The ultimate betrayal by the man he gave everything to has left Memphis with no family, no career and a bone deep bitterness that refuses to release him from its icy grip. His work with an underground vigilante organization is the only light in his otherwise bleak existence.

That and the occasional no-strings hookup with men whose only focus in that moment, and for as long as Memphis wants them, is him and only him. No clingy exes, no unrequited love, no relationship drama. Period.Because Memphis has one rule that he won’t break for anyone or anything. He doesn’t share. Ever. Now if only someone had told that to the young man who would come into his life in the most unexpected way…