La so! Tu sei innamorato con me! in Italian means "I know it! You are in love with me!" in English.
Sei la ragazza più bella! in Italian means "You're the most beautiful girl!" in English.
La vita è bella e tu sei bella donna! in Italian means "Life is beautiful and you're (a) beautiful lady!" in English.
"You are the woman of my dreams!" in English is Sei la donna dei miei sogni! in Italian.
You are truly the woman of my life.
"You are my best friend" in English means Sei il mio migliore amico (refers to male) or Sei la mia migliore amica(refers to female) in Italian.
Chi sei? in Italian is "Who are you?" in English.
"You're my life!" is an English equivalent of the Italian phrase Sei la vita mia!Specifically, the verb sei means "(informal singular you) are." The feminine definite article la means "the." The feminine noun vita means "life." The feminine possessive adjective mia means "my."The pronunciation is "SEE-ah lah VEE-tah MEE-ah."
"Beautiful, where are you from?" is an English equivalent of the Italian phrase Bella, di dove sei? The question translates literally as "Beautiful, of where are you?" in English. The pronunciation will be "BEL-la dee DO-vey sey" in Pisan Italian.
"How beautiful you are!" is an English equivalent of the Italian phrase Come sei bella!Specifically, the exclamatory come is "how". The verb sei means "(informal singular you) are". The feminine adjective bella translates as "beautiful".The pronunciation will be "KO-me sey BEL-la" in Italian.
Come sei? in Italian means "What are you like?" in English.
You would say, "sei la mia per sempre" when talking to a girl, and "sei il mio per sempre" when talking to a guy.