How do I get out of a project I told someone I'd do?

I know it sounds bad but here me out first, haha. This guy I know is making a web series and asked me to be in his film. I agreed, I did a few scenes and that was it. He wants me to be in more episodes. Only problem is, I really hate working with him. He has a wife and I think he only asked me to do it to get close to me because he tries to get us alone and flirts with me a lot.

He said he’d stop, and he did but I can tell he looks at me the wrong way…also, he sucks at directing and editing. His storyline and script sucks…I feel like I’m wasting more time by agreeing to do these so called episodes for his series.

How do I get out of it when I agreed to doing it?