Head Over Heels for the Boss - Return of the Donovan Brothers, #3

Isabelle Cooper's in big, big trouble. Her flower shop? It was just bought by the man she's had a crush on forever. Her new boss, Devon Donovan, is a tall glass of melt-in-your-mouth hotness. The problem? Devon is definitely not interested in love. No ifs, ands, or buds about it. Devon knows Isabelle has been crushing on him since college but buying her flower shop shouldn't be a problem. Not only is she his employee, but as the eldest Donovan brother, he's too busy protecting the family fortune for romance.
But tomboy "Izzy" is all grown up now. And he's finding it impossible to resist her, no matter how hard he tries. So maybe if he suggested a deal, they could work around all the shouldn'ts and get them to a place where they definitely should.