class Match models Model who models ForeignKey User related_name math_

class Match(models.Model):
    who = models.ForeignKey(User, related_name="math_who")  # кто хочет
    whom = models.ForeignKey(User, related_name="math_whom")  # кого хочет
    
    matching = models.NullBooleanField(default=None, blank=True)  # совпадение
    counter = models.IntegerField(default=settigs.MATCH_COUNT)  # счётчик
    
    group = ForeignKey(Group, related_name="math_group", null=True, blank=True)  # группа

    created = models.DateTimeField(auto_now_add=True)