You are.
This is if you're talking to someone you are on a first name basis. If not, or it's someone respected highly, you should use 'usted es' to say "you are"
Tu eres cocina
loca tu eres means 'You're crazy'
"Tu eres gordo" means "you are fat" in Spanish.
¿Tu eres mia,verdad? -You are mia, right?
"Tu eres mi mundo" in English means "You are my world."
Tu eres mi amor means: You are my love
'Tu eres mi vida' (with a gap between 'Tu' and 'eres') = 'You are my life'
"Tu eres linda" means "you are beautiful" in English.
you are
It means, "You're my heart, you're my love, you're my life."
"you are perfect for me and you are beautiful"
It's you