This season Real Madrid always loses to Barcelona. This team has met at least 3 times. Twice in La Liga and once in the Spanish Super Cup final. And yes, in these three matches, Real Madrid always lost. First, Real Madrid lost with a score of 1-2, then Real Madrid lost with a score of 0-4, and finally Real Madrid lost to Barcelona with a score of 2-5. And actually I'm not sure that in the Copa del Rey final we will see Real Madrid avenge their previous defeats. because from the previous match against Real Sociedad we still saw how fragile Real Madrid's defense was. So Barcelona's chances of winning still seem quite big in El Clasico this time.
Wrong bro, it's twice no team can ever meet three times in a league game in a particular season, it's always twice. The first game you talked about a pre season game and isn't in a way a competitive match. They have met just twice so far this season. One in the league game of which they lost 4 - 0 and the Spanish Supercopa finals which they lost 5 - 2. Real Madrid Vs Barcelona is yet to meet on the return leg for the League match. But nevertheless, you're absolutely right on Real Madrid losing in all the games they have met in so far this season.