Enlisted by Love by Jenny Jacobs
When ex-Army officer Matthew Blake starts a new career, he comes up against the most challenging obstacle to his happiness he’s ever encountered: Greta Ferguson, the interior designer who’s supposed to be making his life easier.  He’s used to giving orders and having them obeyed; she’s a determined business woman who’s not used to be challenged.  Sparks fly – sparks Greta is determined to squelch, not caring to repeat the mistakes of her past.  But with a little help from a little sister, they both learn how to give up control to find love.