Who holds your heart? 

'Tis a trick question, as one cannot hold what does not exist.

Let us rephrase. 

Who has shown himself the most convenient to you? 

Whom have you led to believe he matters, as if you would not cut his throat the second he does not meet your shallow wants? 

Whom do you lead into feeling cared about, when what you care about is whether or not he meets unwritten material qualifications. 

You don't even have to like him, as long as he does. 

Whom have you dishonestly deferred to, making them feel in charge? 

Who have you promised yourself to now, promises you do not even believe, what manner of con man? 

Have you told him it's only a business deal?