I was hurt and sad but I decided not to care.
How did you stop caring?
I just tried my hardest to forget about it.
That's honestly great to hear. We all give far too much power over external circumstances and allow them to control our feelings.
I just fear the thoughts will creep back and destroy my progress.
You should not let it destroy your progress, you are doing so good! You should not let the negative feelings hold you back!