Testemunhar means "to witness" or "to testify." It's a formal and evocative verb that adds a sense of gravity and significance to the lyrics.
In the song, Rubel uses it beautifully when he sings, "o sol de testemunhar nós dois" (the sun to witness us two). This phrase elevates a simple romantic moment into something grand, suggesting that even nature itself is observing and validating their connection. It's a word that makes you pause and appreciate the depth of the sentiment.
This song starts with a question that sounds simple but is actually very complicated: "Você me pergunta / Se pode beijar, meu amigo" (You ask me / If you can kiss, my friend). The singer's first answer seems incredibly cool and supportive. He tells his friend she is free to do whatever she wants, saying "Teu voo é lindo" (Your flight is beautiful) and that she can "beijar e ir com todo mundo" (kiss and go with everyone). It sounds like he's totally fine with an open relationship.
But then comes the twist. The singer reveals his true feelings. He says that when his friend asks that question, she forgets a key detail about him: "eu não te divido" (I don't share you). He explains that he's a one-person kind of person, saying "Só vou em par" (I only go in a pair). He admires her ability to be with multiple people, but he has to love her "de longe" (from afar) because their ideas about love are just too different. The song is a beautiful and honest look at two people who care for each other but want fundamentally different things from a relationship.