From Zestria, With Love by Rena Marks

“If you marry my stepbrother, we could be sisters!”

Vanna: That was our dream back when we were eight. We lived on different planets, but once we figured out the art of letter writing, we learned enough about each other’s cultures to become best friends despite the distance.
Required to attend space camp, we spent summers together and grew as close as sisters. Eventually we realized marrying her Zestrian stepbrother would have opened up a whole can of worms anyhow.

And when I finally meet him? I wasn’t prepared for the rush of hormones that comes along with the Zestrian connection—the rare occurrence that happens to hit for us.

⭐⭐⭐

Mish: Of all the people for the connection to recognize as my eternal mate, it chooses Vanna Suchey, wild child I’d hoped my little sister would outgrow. Not only did Brionna not outgrow her, but now Vanna’s on our planet and I can’t get away from her.
She holds my job in her hands, my life in her hands, and my heart?
In her hands.

This sweet and steamy holiday tale is part of the Alien Love Letters collection, a collaboration of five authors telling holiday tales with a science fiction romance twist. Each book is a standalone, containing its own Happily Ever After and can be read in any order.