And she likely wasn't even in a relationship with him.
Breh was likely looking at her with a sexual desire from day one. Said fukk it, let me invite her to this hotel and see if she's feeling me the same way I'm feeling her. She got there, saw the beer and baby oil, knew that shyt wasn't right then tried to leave. (Notice the beer is unopened, she wasn't there drinking having a good time)
When she tried to leave he knew she was gonna go and tell her sister. He got mad, threw her on the bed. Choked her, killed her, then raped her corpse in a fit of lust-filled anger.
Next he took several hours to get his story straight, then called the authorities and lied about everything.
I listen too much to Sword and Scale podcast. I know how this likely went down.