He never broke up with her to begin with.

I was just someone out there for him to cheat on her with.

I'm so tired of trying to make things work with guys. I need to stop thinking that I could have been part of his life, or he could have been part of mine. I need to stop thinking it's worth all the effort to be with someone. I'm too gullible and a bit too stupid.

And now I've made such a fool of myself.
I worked so hard over the past few months to really return to normal, and it wasn't necessary, because I came up empty anyway.

I'm making myself sick.
I don't think I care anymore.
It's not healthy for me to care about anyone, and it's a waste of time. I've decided to give up.