Human relationships are difficult to understand. There is lust, there is love and something in between, and humans will play. It can be dangerous to both body and soul.
So what happens when you add aliens to the mix?
Today it's hard to define just what family is. In the future it's not going to get any easier. You thought gay, bi, straight and different religion was hard to work around. Try dating with different species and worlds. Oh and a few other things too. Here are just a few of the things that can go wrong.