These books are M-F and take place in outer space with aliens who are humanoid, but not human. The males are blue, have horns, and a special feature that makes sex much hotter than usual.
Each book is a standalone, but is best read in order.
Setting: Outer Space
Characters: Human women & Alien men
Time period: future
Availability: Digital and Print
Heat: Hot/Steamy consentual sex
Mail Order Bride series