I agree - he has shown recognition of wrongdoing by lying and hiding the evidence of his crimes.
I'm sure the girlfriend will be happy to be alive someday, but I think this guy purposefully chose a girlfriend who was naive. Someone more worldly wise would have asked alot more questions and not been as trusting. I cut her alot of slack - she's a victim, too, and heavily in denial about her lost wedding. It's hard to get over a disappointment like that even without a police investigation of a murder. She loved this guy - it's so tragic!
I saw an interview with the fiance's father, and while he was worried about his daughter, he seemed quite relieved that she literally may have dodged a bullet (or worse) and got away from this guy before it was too late. At any time she could have found the evidence linking him to the murders - the panties, and duct tape, or the gun. And then what? He never would have let her tell anyone, and she would also be dead.