"
If the heart is always searching,
Can you ever find a home?
I've been looking for that someone,
I'll never make it on my own
The whole "If the heart is always searching, Can you ever find a home?" is about the saying home is where your heart is. If you love someone your heart is with them and that they can make it with them. The part "I've been looking for that someone, I'll never make it on my own" is talking about how she helps him and how much he loves her. She is his life and can't survive without her.