Ugh, what’s wrong with me.

I’ve been talking to a guy for about a year on and off mostly off, we’ve NEVER had sex but he’s tried to make his “move” . And I keep trying to stop talking to him and it never works, we end up talking again after a few weeks. I feel like I’m wasting his time. I have herpes and I never told anyone about it. I don’t know how to tell him. I’m scared that he’ll be pissed or just be disgusted. If anything I don’t want to lose the friendship. I feel like a liar... I don’t even know how to bring it up...