That really depends on what Alien species we're talking about. They'd have to be humanoid in appearance, attractive, have suitable personality traits. I wouldn't sleep with some alien species that releases some poison into you after you impregnate her so that she can feed off of you to nourish her offspring or something, lol.
Sucks so hard that she's leaving the series.
- "If you have the heart of a true winner, you can always get more pissed off than some other asshole."