Intrometeu comes from the verb intrometer, meaning "to interfere" or "to meddle." It's a less common word than simply "meteu" (got into) and carries a stronger sense of unwanted intrusion.
In the song, Michel Teló uses it to describe how "o povo se intrometeu na nossa vida" (people interfered in our lives), highlighting the external judgment and gossip that forced the lovers to meet in secret. This word perfectly captures the central conflict of the song.
Have you ever felt like everyone has an opinion about your relationship? Michel Teló's "Se Intrometeu" is all about that! Our singer is totally smitten, saying, "Te quero tanto" [I want you so much], but everyone around him is playing critic. They're saying his love interest isn't good for him, pointing out things like, "Que você fuma, bebe cerveja" [That you smoke, drink beer], and that they're "muito diferente de mim" [very different from me].
But our singer isn't having it! He's got a great line, "Mas a minha cabeça pensa diferente / Pois quem não tem passado / Não me dá presente" [But my mind thinks differently / Because whoever doesn't have a past / Doesn't give me a present]. He's basically saying he doesn't care about the past, he cares about the here and now. The repeated chorus, "Se intrometeu, se intrometeu / O povo se meteu na nossa vida" [They meddled, they meddled / The people got involved in our lives], really drives home the frustration. Because of all the gossip, they're forced to meet "às escondidas" [secretly]. It's a fun, relatable song about wanting to love who you want, no matter what anyone else thinks!