Smitten man 'stabbed and strangled pregnant woman to death' because he was furious he wasn't the father of her unborn child

Katherine Martinez and Emilio Calderon

A smitten man who tried unsuccessfully for two years to woo a 23-year-old college student stabbed and strangled her to death when he learned that she was pregnant - and that he wasn't the father. 
Katherine Martinez repeatedly rebuffed Emilio Calderon's romantic advances - even after he started giving her rides to work and class and offered to buy her a car, her family says. 
The New Orleans Times-Picayune reports that Calderon, 29, admitted to becoming enraged when he visited Martinez Sunday at her apartment in Terrytown, Louisiana. 
Police say he stabbed her three times and then strangled her to death. Her unborn baby died, as well.
Martinez's family says he should have had no expectation that the baby was his - she never liked him as anything more than a friend. 
'They never had sex. They didn't kiss. They never even held hands,' Osmer Batrez, Martinez's friend, told the newspaper. 
'They did not have an intimate relationship.'
Despite Martinez's insistence that she and Calderon remain 'just friends,' he became more persistent. Eventually, he started showing up at Blue Cliff College, where she took classes, and the restaurant where she worked as a waitress.
Martinez started blocking him on her social media accounts. Calderon responded by creating fake usernames to trick Martinez into 'friending' him so he could keep tabs on her, her family told the Times-Picayune.
Despite Calderon's persistence, he never exhibited violence or aggressiveness, they say. 
When Martinez got a serious boyfriend, Calderon became even more interested in her, Martinez's mother Orla Martinez told the newspaper.
He attempted to swoop in when they had relationship problems. Still, Martinez rebuffed him. 
On Sunday, she let him into her apartment so they could talk, police said.
At some point, after learning she was pregnant with her boyfriend's child, Calderon flew into a rage and attacked her, police say.
'We want the public to know that just because he pursued her, doesn't mean he was entitled to her,' Martinez's friend Onix Palacios told the Times-Picayne.
'She was a good daughter, a good sister, a good friend. She didn't deserve this coward taking her life when she had dreams and goals to be a wonderful mother.'
Emilio Calderon, 29, admitted to stabbing Martinez three times and then strangling the life out of her at her apartment in Terrytown, Louisiana
Martinez was a student who worked part-time as a waitress to support herself. Calderon (right) was arrested shortly after Martinez was found dead.

Proverbs 6:
34 For jealousy is the rage of a man: therefore he will not spare in the day of vengeance.

35 He will not regard any ransom; neither will he rest content, though thou givest many gifts.

Matthew 5:
37 But let your communication be, Yea, yea; Nay, nay: for whatsoever is more than these cometh of evil.