The Jealous Groom by Alexa Riley

Allison and Amber are twins, best friends, and partners in crime. They’re the ones always causing trouble, raising hell, and living the good life. But striking a deal with the Princes of Norway may have gotten them a teensy bit in over their heads. Now they’re on the run from the brothers that have tricked them into marriage…and a whole lot more. It’s all fun and games until you make the wrong man jealous.

Magnus and Henrik have decided to share the throne and all of the work that goes along with it. When they finally take a vacation to the Greek Isles, a night at the casino brings them more than just good luck. The twins have made a bet and now it’s time to collect…whether they come quietly or not.

Warning: What could be more jealous than a man used to getting everything he wants? How about two of them! The big bossy bruisers (say that three times fast) aren’t letting these sassy Americans break their deal.