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 mi mundo" in English means "You are my world."
¿Tu eres mia,verdad? -You are mia, right?
Tu eres mi amor means: You are my love
'Tu eres mi vida' (with a gap between 'Tu' and 'eres') = 'You are my life'
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
...tu igual eres muy guapo. ...You are handsome also.
Tu eres muy lista in English means you're so clever.