Dashing for Love by Valerie Pepper

A dating app that hides your identity is great—until you realize who’s on the other side.

In the margarita-fueled wake of his thirtieth birthday party, small town veterinarian Matty Brodigan takes the plunge into Blinding Love, an app where pictures aren’t allowed and users are paired based on personality tests. How is he to know that the woman he matches with is his best friend’s little sister?
Goldie Dash is finally getting her life together: she’s in her own place and has a burgeoning career as a journalist. She’s probably never going to shake her crush on her sister’s best friend Matty Brodigan, but that’s okay, because she just matched with someone on Blinding Love.
Hidden behind fake names, Goldie and Matty fall for each other. It’s only when they agree to meet at a masquerade ball that Goldie realizes what’s happened, and when she finally reveals the truth to Matty, the shocked pair decide to keep their relationship under wraps while they figure out what to do.

But secrets only last so long, and soon they face a choice: play it safe and walk away, or risk it all for the love they never knew they had?