How do I conquer my erotomania delusion?

Hi I am actually Schiz, but I have heard many times that Im a mild case. I also have an alternative depression diagnosis. I only got the sciz diagnosis after I started hearing voices, so I guess I did not use to have really weird delusions.

However Im a SERIOUS case of erotomania. Its a delusion characterised by the belief that someone is in love with the person and sends hidden messages.

Ive suffered from this delusion for at least 10 years. I would like to say I have improved, but its still there. I think I might come across as borderline or outright offenisve to some women. Its sad because Im actually not in control of this delusional disorder. Its the one problem I have that Im not in control off.

How do I recover?
Im 33 bisexual, not the best looking. Havent had any serious relationships.