Here are a few other ways to say "I love you" in Polish, with varying levels of formality and intensity:
* "Kocham Ciebie" - This is a more formal version of "Kocham Cię".
* "Bardzo Cię kocham" - This translates to "I love you very much".
* "Jestem w Tobie zakochany/zakochana" - This is a more poetic and passionate way to say "I am in love with you".
* "Uwielbiam Cię" - This translates to "I adore you".
The best way to say "I love you" in Polish depends on the context and your relationship with the person you're speaking to.