Conveniently in Bloom by Elise Kennedy

Lily Parker hates commitment. Annual subscriptions? No thanks. Tattoos?? Not on your life. She’s already planned to leave Fairwick Falls after being there for 11 months… until a rogue patch of ice lands her in mandated physical therapy. The problem? She really meant to get health insurance (really!) but… it slipped her mind.
Unable to climb the stairs to her apartment, she moves in with the one person who has a first-floor bedroom and shower: Nash Donnelly, her childhood-turned-teenage-turned-adult crush.
Nash Donnelly needs a wife. His money-grabbing brother wants to oust him as bank president based on an arcane 200 year old bylaw. Nash must act quickly to prevent Fairwick Falls’ only bank from falling prey to his brother’s scheme to sell to a large corporate competitor.
Who better to be a wife-of-convenience than the woman who moved in with him… and whose lips he’s dreamed of for months.
They propose a simple trade: health insurance for marriage until the bylaws can be changed. Then they can happily go their separate ways, no commitment necessary…
…right?