Court was told Stephanie Walroth, 44, and Shaughn Lumley, 58, were drinking together on Dec. 21, 2011.
The couple argued and Lumley struck Walroth in the head with a whisky bottle.
Walroth then hit Lumley with a sugar jar before using the elastic of his underwear to strangle him.
His body was found in his apartment four days later.
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