If I Told You, I'd Have to Kiss You by Mae Marvel

Mr. and Mrs. Smith meets Delilah Green Doesn't Care in this heart-racing romance of secrets, spies, and steam.
How to become a legendary international spy:

1. Never blow your cover.
2. Trust no one.
3. Don’t fall for anyone at the agency. Especially if she's your ex-girlfriend.

Second generation superstar spy Yardley Whitmer is known as “the Unicorn," Able to disarm anyone in the field--with either her charm, or her skills--Yardley is a premier operative capable of handling the most exclusive missions. But somehow she can't handle packing up her things and moving out of her girlfriend's home in the wake of her fading relationship.

KC Nolan, aka “Tabasco,” has a big reputation for being a tech genius. She's the woman behind the ops and can crack anything--except for her girlfriend Yardley's facade. Yardley is warm and bright and funny, but it still feels like she doesn't know her at all.

When an undercover shakedown at a coffee shop goes unbelievably wrong, Yardley and KC discover what they've been hiding from each other--that they are both agents, and they've been keeping secrets from each other for years. It is clear their chemistry is anything but clandestine--even though their hearts are still broken by the weight of secrets built up through their relationship. But as they fly across oceans, race through windy European streets, and hide crammed together in sweaty closets, they not only have the chance to reclaim the mission, but come back to each other for good.