As well as traversing the dungeons and reforming society in Persona 5, you are able to interact with a vast selection of people from every walk of life. As your relationships build, it is possible that one of them may become romantic, provided that they are eligible to do so. Out of the twenty one Confidants available in the game, nine of them have the potential to become your girlfriend, provided that you reach the highest ranks of their story arc.
When you reach the particular point where your relationship will evolve, you will be given clear notification by a question with two options. One will allow you to fall in love with the current Confidant, and the second will allow you progress down with their story arc as a close friend or business partner. Being in a romantic relationship does not give you any benefits for your fighting abilities, but it does allow you gain exclusive items which will restore your SP, or accelerate your progression through the same Confidant’s story line within a New Game Plus playthrough.
A word of warning. While it is possible to become romantically involved with multiple Confidants, it may lead to devastating social consequences on a particular day of the year.