When Fold pilot Diego is assigned to space station Mikesi, he expects his biggest problem will be boredom, even if it is circling a recent First Contact alien home world. Much of the Human speculation aboard the place revolves around the mystery of Antho females, as all those encountered so far seem to be male. Being gay, it's not a question Diego gives a lot of consideration.
All his attention is soon taken, anyway, by station admin Portya. Though they have many physical differences, they also have enough in common that Diego is confident they'll get along just fine—and they do. The sex isn't just amazing, it's addicting.
Until Portya winds up pregnant, a surprise for which Diego was not remotely prepared.