Crashing Upwards by S.C. Wynne

Harper Jones is a professional bike courier, and in his business if you don’t ride fast, you don’t make money. His apartment has mice, he’s barely able to scrape up the rent, but at least he’s living life on his terms and doesn’t depend on anyone.

Sam Foster is the gay son of a wealthy conservative senator. He’s noticed Harper before when he’s dropped off packages at his dad’s company, but he’s never had the nerve to speak to his secret crush.

When Sam accidentally hits Harper with his car, Harper’s bike is destroyed and he’s injured seriously enough that he won’t be delivering packages for a while. Sam decides Harper needs rescuing, and he moves in with Harper to take care of him.

Unfortunately, Sam’s politician dad is convinced Harper’s a con-artist and he’ll do whatever it takes to get him away from his son.