Taken By the Alien Traveler by Ashlyn Hawkes

Dax isn’t a scientist like his parents. He’s a traveler, a bored one since he’s seen all of Kuria. Now, he wants to travel to Earth.
There, he’s quite taken with Olivia, and he plans to take her with him around the world… and to his bed.
If she’ll let him. The first generation of Kurians—the Novan-Earthling babies—are all grown up. Now, they need to find their own lovers to continue to prevent the Novans from becoming extinct.
But the Kurians, especially the males, are all plagued by an inquisitive and adventurous spirit, just like their Earthling mothers. They jump at the chance to go to Earth and find their females there.
The Earthling males do not care for this at all, but the females? How they feel about this remains to be determined.