Dexter tries to be there for Rita, he really does. But our favorite serial killer has problems feeling much of anything for anyone.
Added:
Rita Bennett is pretty much as understanding as it gets. You'd have to be in order to date Dexter Morgan.
Added:

Dexter Quotes

I put her in a short skirt, so we could see her panties when she's falling.

Masuka

There are no secrets in life, just hidden truths that lie beneath the surface.

Dexter Morgan