Hey Michela, this is really beautiful... i love the whole flow of it except, maybe, the very end...
"But please keep it a secret
To avoid ending up with regret"
To me this sounded a bit awkward... and to be honest, I am not one to judge poetry... but maybe you could think a bit more and make it sound a bit better so that the end pangs you in the gut, you know what I mean? It seemed like one too many syllables in that last line.
But other than that, this is reallllly good. :)
Amazing job!