The first thing you should know about Slower Relations is that it is an add-on, which means that it is not a standalone game. You will need to install The Sims 4 in order to play this add-on.

The purpose of Slower Relations is to improve the game, by increasing the speed of the relationship-building process. In the original version of The Sims 4, you could only form relationships with people of the same gender. This add-on allows you to form relationships with people of different genders.