My landlord’s daughter and I have been having an affair, but I’ve a serious girlfriend who comes to the house as well. I told the girl that I liked her but we couldn’t date because I love my girlfriend too. Later I suggested we become friends with benefits and she agreed.

She was cool at the beginning, never acted jealous when my girl came around. She played along so well, and I was even happy with her.
Then suddenly, she started acting jealous. She will even call or text when my girlfriend is around. I tried to stop her, but she continued. She gave my girlfriend attitude several times. My girl started questioning and suspecting me.

I could quit with her, but the girl was there anytime i needed her. She sneaked to my room and gave me s3xx anytime so I couldn’t cut her off completely.
I was there recently when she came to me with her father and to my surprise, this girl has told the father that I’m dating her and that I’ve promised to marry her.

Her father too came to tell me that since I’ve said I’m in l0ve with his daughter, no other girl nor my girlfriend should come around anymore else he’ll chase her away with a cutlass because he doesn’t like men who cheat.

I’m 26, and my landlord’s daughter is 22. My rent will be due in August next year so it’s a long time. I’ve since prevented my girlfriend from coming around, but it’s becoming an issue. I’ve stopped inviting the landlord’s daughter over for a while, but his father still calls me his son. He won’t let me explain that the daughter is lying as well because we don’t have such a friendly relationship…
What do I do now please? I need advice, thanks.