Within given time, you have to build your stats and develop a relationship with someone from the game.
Building a relationship means talking to potential dates, giving them gifts and remembering what they like.
Select a dating sims game and start going out with the hottest girls.
The gameplay for guys and girls is not very different.
The last one is important since you can build your stats, such as intelligence, charm, and athleticism, based on that and get them more interested in you.