The victim told them that Awil had beaten and raped her for a period of four days last year between September 28 and October 1.
She stated that Awil attacked her at the house, forcing her into a room.
He banned her from eating or drinking and repeatedly assaulted her, leaving her unconscious.
The victim sought refuge at a family member’s house after the four days. Her cousin then called an ambulance.
Detective Constable Gemma Harkin, who led the investigation, said: “Awil has, at every turn, denied responsibility for his actions. He took advantage of a vulnerable female who trusted him, and subjected her to such violence that no human being should ever have to endure.
“The victim has displayed immense courage in coming forward and we hope that she finds some comfort in the sentence which has been handed down.
“I would urge any victims to please talk to us. We have specially trained officers who work closely with partner organisations to provide the right support. Please do not suffer in silence – we are here to help and will do all we can to pursue prosecutions and achieve justice.”