User blog comment:Your friendly neighborhood Spy/Freddy Emblem Character Signups Stage Three (Marriage system)/@comment-24491127-20150225030419/@comment-26434802-20150225030700

The point of the marriage system is so that everyone can technically marry everyone.

Having characters of the same gender dating each other would defeat the point of the marriage system, it's really only there so that the player can obtain the children characters and get slightly better stats in battle when the married untis are paired up with each other.