The Favor by Suzanne Wright

In The Favor, Vienna Stratton is in a difficult financial situation, and when her wealthy boss, Dane Davenport, proposes a mutually beneficial arrangement, she accepts. Dane needs a fake fiancée to deal with family expectations, and Vienna agrees to the role, despite the challenges that come with pretending to be in love. As they navigate their fake relationship, they both start to realize that their chemistry is undeniable, and their fake engagement may turn into something much more real.