They know everything about the other partner through family, friends, colleagues, etc. During the time the couple hated each other they had a physical attraction, but "didn't like" his personality. The couple ended up hanging out in the same social circles, so they saw each other all the time and started having fun together. During these times the couple started to bond and decided to date and keep it under wraps due to what outsiders might think as they hated each other at first. After about six months the couple finally comes out about their relationship. This type of relationship is difficult in a way because they have to keep their relationship a secret for six months. Keeping the relationship a secret for a while can actually be a good thing as it gives the couple time to focus on their relationship. It could also be a bad thing as it could make a person feel unworthy of public knowledge of the relationship. An excellent example of this is in the movie Despicable Me 2, Gru goes on a mission with Lucy to find a villain. Gru can't stand the sight of Lucy. When they reach the end of their mission, Gru falls in love with Lucy. This love can be very intriguing. As you can see, there are different types of romantic relationships. Each person should be able to determine what type of relationship they have had before