Inferno is the Italian word for "hell". It's a powerful and dramatic word that immediately adds emotional weight to the lyrics.
In this song, Noemi sings about the painful push-and-pull of a difficult relationship. She says she would want to stay with her partner "anche se fosse l'inferno" (even if it were hell), powerfully expressing her conflicting desire for a connection she knows is destructive.
This song is all about a relationship that the singer knows is a total disaster, but she just can't quite quit. Noemi starts with some incredibly blunt lines, calling the relationship "l'unico errore" [the only mistake] and saying that being with this person is "perdere tempo" [losing time]. They have moments of affection, but it's just "amarsi un minuto per odiarsi a lungo" [loving each other for a minute to hate each other for a long time]. It's a classic summer romance that went wrong, and now she's trying to end it for good.
But here's the twist. After declaring "questo bacio è l'ultimo" [this kiss is the last one], she immediately asks, "Ma tu, ma tu, ma tu / Tu cosa fai questa sera" [But you, but you, but you / What are you doing tonight?]. It's that moment of weakness we've all felt. She's caught between wanting to see him again and hoping she never runs into him for "una vita intera" [an entire lifetime]. The whole song is this push and pull between knowing it's better to leave and wanting to stay, even if it feels like hell.