You are my life.

The Arabic word for "life" [Hayaa] is very useful. So is the word for "my life" [Hayaatii]. The trick to say that something is mine is to add [ii] in the end of the word. If the word is feminine, like "life" is in Arabic, instead add [tii] in the end. To be romantic and say "You are my life", just put the Arabic word for "you" before - [anti] for a woman and [anta] for a man.