This HaBO was sent in by Meg, who wants to find this romance:
It’s a recent book. Contemporary, possibly set in NYC or Boston.
He’s a tech genius or businessman with a speech impediment that he feels makes him unlovable. She’s the charming barista/waitress he’s pining for. She’s injured in a hit and run (possibly?) or ill and he takes her to the hospital and says they’re either engaged or married.
Help a bitch out, it’s on the tip of my brain and soooo frustrating.
This one is definitely ringing some bells for me.