Song meaning of Sinceramente by Alta Consigna

The lyrics of the song "Sinceramente" by Alta Consigna convey a sense of indifference and detachment towards a past romantic relationship. The artist expresses that he does not believe it is necessary for others to know about their past involvement, highlighting a desire to avoid any negative consequences. 
The lyrics suggest that the artist has a reputation for being cautious and using protection, but ultimately views the relationship as a failure ("un strike"). Despite this, the artist acknowledges that the person had an impact on him, emphasizing that they did not live up to their social media portrayal. 
The chorus reveals a sense of freedom and detachment, with the artist stating that he is no longer affected by the person's actions or attempts to manipulate him emotionally. He even dismisses any concerns about their messages of suicide, implying a lack of emotional attachment and a disregard for their well-being. 
Overall, the song conveys a message of empowerment and moving on, encouraging the individual to prioritize their own happiness and not allow themselves to be drawn back into a toxic relationship.