Leggerezza translates to "lightness" or "frivolity." It's a beautiful and somewhat abstract word that goes beyond a simple physical description.
In the song, the singer describes his love interest as "leggerezza e pagine di noi" (lightness and pages of us). This suggests that she brings a sense of ease, freedom, and perhaps even a carefree spirit into his otherwise chaotic world, making her a source of comfort and peace amidst his struggles.
"Con te" is about the strange ache of missing someone even after they're gone. Sergio Sylvestre sings from inside an empty, quiet house that used to feel full — the loneliness itself has become a kind of sickness he can't shake.
The chorus keeps circling back to one image: hiding his tears "with you," because being with this person used to be where he processed everything, tears included. Now there's someone else in her life, and he's left sinking into a "disaster" he calls his own world, replaying pages of a story that already ended.
It's not an angry breakup song. He admits nothing matters more than what he still feels for her, even while trying to pick himself back up "in pieces." The ending mirrors the opening line — she left, but she was his — landing on acceptance rather than resolution.