Who has a heart and the mind?
You love someone after knowing her heart her kindness, helping nature, personality then it means that you're in love with her in heart. If you love someone after knowing her completely and after everything fall in place then it means that you're in love with her in mind.
Conversation between heart and the mind
Mind: I am worried
Heart: Simply relax
Mind: But, I am totally lost now
Heart: Simply follow me
Mind: But, you've never been there before
Heart: Trust me, you will like it