Unfortunately, Luis and Sergio do not at all speak today. They stopped talking to one another after Luis supposedly wanted to buy a house in Spain for Sergio and the doctor to live in. But Sergio wished to continue his studies in the United States, and go to school at Boston College and go to Harvard Law School, but Luis wanted his brother to attend college in England.

When Sergio told his brother he wanted to stay in the U.S., they had a big falling out. In an interview with Metro Word News, Octavio talked about Luis and Sergio’s relationship and shared, “It was when they could not understand each other completely. Sergio told him, ‘Wait for me a little while,’ there was a distancing then, Luis Miguel cut off his financial support, and they also eliminated any trace of relationship and contact.”

Sergio and Luis never repaired their relationship and do not speak, and it appears that Alejandro does not speak with Sergio either. 

Luis does keep in touch with his other younger brother, Alejandro. Per NewsBeezer, the "Te Necesito" singer was seen out at an exclusive Miami bowling alley in 2018 celebrating Alejandro's birthday.  

Alejandro even took to Instagram in April of 2018 to wish his older brother a happy birthday, posting a photo of Luis on stage.