This is very poorly written account - in the title why do you use the passive form ? 'After his girlfriend was shot' .
As an author you are supposed to have a point of view, not lazily shift from one perspective to another, with little to no analysis.
No - 'He shot his girlfriend to death and then tired to garner pity with his inherited defect'.
Ugly, vicious, entitled man... really, your article is very misleading and does a disservice to the atrocious killing of a woman who chose to be with a defective man in physical and moral terms.