The thing that bugged me about this movie is the sheer carelessness for a profound plot, interesting characters and character development and, most of all, dialogue. The film's original audio language is my mother tongue, and while watching it I just kept thinking over and over "WHO IN THE HELL TALKS LIKE THAT?". This could be my personal preference and experience, although dialogue and script could've been better thought out. Nonetheless, instead of criticizing the movie for what it should've been, I'll try to judge it for what it is:
You have two primary protagonists, none of which actually interpreted by real actresses because they're the singers the movie's based upon, who show almost zero and/or struggle to pass on charisma, passion or, for the lack of a better word, a credible perfomance. In contrast with the sometimes-passable-but-mostly-reasonable work of other actors and perfomances present in the movie - by REAL professional actors - our protagonists Ana Caetano and Vitória Falcão interpreting themselves seem, at the very least, mediocre and barely sympathetic. It's poorly acted and poorly written.
But, I won't come here and lie about this movie: cinematography, color grading and other technical aspects are very good, sometimes interesting and even clever. The production and artistic values showed me that the film was problably made in more than a few weeks, even though dialogue and performance led me to think it in the firstplace. There's also the social impact of having two LBGTQ protagonists in the form of a feature film, which is certainly awesome for the community. To end this section of praises, Ana and Vitória are so goddamn cute it's almost hypnotizing and, being some sort of romantic comedy, the movie did give me a few laughs and might grant you some good time too.
With this is mind, the film mostly shines when the songs hit. If you're looking for a cookie-cutter unremarkable musical-romantic comedy about modern relationships, this is the one. If you're looking for a more thorough inspection of love and relationship the bloated plot doesn't withstand itself in the middle of music video clips and unhappy performances, with characters who are unapologetic shallow and unispiring there's no real development in the story, goal, motivation, loss, fullfiling change, etcetera.
Just to remember: the way the movie treats sexuality, love and relationships is great, it's natural and stripped of awlful stigmas, and I don't doubt the whole experience can be wonderful to fans too (meaning it does have some pros), but all of it doesn't progress with some original character study or interesting plot, for example (I almost fell sleep during the movie a few times). Either way, it doesn't stop being essencially a simple, lazy-ish and adequate forgettable film in all of it's comercial glory.

Or maybe i'm just being too harsh over something that didn't had the pretension of being a cinematic masterpiece... who knows?

Edit: Typos.