I really need a girl advice.

I met this guy about 4 months ago and we’ve been talking/hanging out almost everyday. He knows my family and I know his. He is a Jamaican guy(who idk why people keep telling me they are the worst) I find the good in him, I want to be there to build a life together but he only wants to date if it’s an open relationship. I’m willing to make the sacrifice, I know he talks to other girls and it does hurt me, I don’t know if I should be okay with this, cut him off or just stay as friends 😞