Alien Hunger Series by Mel Teshco

Humans have been almost wiped out. All the males are gone and only a few hundred females worldwide survived the devastation. The same deadly virus annihilated the female population of a mighty alien nation, and their three kings—Dar, Ezra and Maddox—are looking for one special female, Lillian, to capture and seduce. Though Lillian survived, she has no memory and struggles with the fact that three alien men have become her lovers... moreHumans have been almost wiped out. All the males are gone and only a few hundred females worldwide survived the devastation. The same deadly virus annihilated the female population of a mighty alien nation, and their three kings—Dar, Ezra and Maddox—are looking for one special female, Lillian, to capture and seduce. Though Lillian survived, she has no memory and struggles with the fact that three alien men have become her lovers. One by one, they take her, make her burn for release and satisfy her every sexual need. She craves their touches, their kisses, their comforting embraces while forming strong emotional bonds with each. Lillian is falling for her sexy aliens and agrees to become their life mate in a special ceremony—her three males will make love to Lillian as all the surviving alien males watch. But, as the ceremony nears, Lillian begins to remember. The aliens lied and covered up the horrible truth. Their happy, new life together might not be possible after all. less

Ally Grayson believes she's the last person on Earth after aliens arrived, bringing with them a deadly virus that wiped out most of mankind. Somehow surviving the annihilation, she hides in a Sydney house with her dog, Bonnie. She knows she has to leave before the "eyes in the sky" detect her and have her captured, but she never expects an alien to save her and Bonnie from the jaws of a ravenous, feral dog... moreAlly Grayson believes she's the last person on Earth after aliens arrived, bringing with them a deadly virus that wiped out most of mankind. Somehow surviving the annihilation, she hides in a Sydney house with her dog, Bonnie. She knows she has to leave before the "eyes in the sky" detect her and have her captured, but she never expects an alien to save her and Bonnie from the jaws of a ravenous, feral dog. Never expects to be drawn to Renate, the alien male who seems more human than any man she's ever known.She fights an attraction she can't win, and soon enough she's in his arms, under his hard, amazing body. Except their unearthly desire might not be enough to keep them together when Renate's alien comrades close in. less