Bad Relationship

I know I should move on but I’ve already invested so much time. The truth is I’m really not sure I’ll get any better so shouldn’t I stick here? We had some great moments in the past and who knows maybe they can return again? Maybe I’m just afraid that at this point in my life I’m not worthy of making the change. It could be worse, right and then I’ll have wasted more time and effort. Isn’t it better to stick with something you know rather then leap into the unknown anyway?  I guess then I’ll just wait to see how it all ends after all.