Ravished By the Alien Raider by Ashlyn Hawkes

Thirty-five years ago, the Grots came, and now, Brock, the first Novan-Earthling, is ready to go to Earth and find himself a wife.
But Earth is not like Kuria, and Brock finds himself raiding to survive.
That’s how he meets Emma. He will do anything to ravish her, but will she succumb to the raider’s charm?
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.