I want to end this friendship. I just can't do it anymore.
Why do you want to end this friendship?
He always reacts negatively when I tell him about my sex life. I can't get past that.
I'm sorry you are thinking about ending a friendship. It is wrong to abandon your friend. I think there are some things that you need to keep separate from your friend because I'm sure he doesn't want to hear about your sex life.
If things don't get better, I'm just going to tell him that I am thinking of ending a friendship because of things that happened between us.
You should just find a common ground on what you guys want to talk about and then you can have more meaningful discussions that you both like. You shouldn't just leave your friend like that.