Love and Rockets — Martin H. Greenberg

Space...the final frontier. Or is it? Many say there's no frontier more forbidding than a romantic relationship between a man and a woman. But what if one's a human, and the other's an alien? Here is an original collection of space opera stories where authors take love (unrequited or not), on a spaceship, space station, or planetary colony, and add enough drama, confusion and mayhem to ensure that the path to true love-or short-term infatuation-is seldom free of obstacles.