When I hear someone say to someone
"You are what I live for" I don't find it cute. That's a lot of pressure to put on someone and how can your life be consumed by a single person.
Do you know what I live for...
Sunrises.
Ocean water running over my feet.
Laughter.
The morning dew.
The light in someone's eyes when you complement them.                                  
Hugs.
Sunsets.
I could go on forever and to be honest you're on my list.
But you don't need you to carry the burden of keeping me alive.
I live because I think life is beautiful and you are just one small fraction of its many wonders.