Is there a word for "I thought I did this thing, but it turns out I only thought about doing it and then forgot to do it?"

Is there a word for "I thought I did this thing, but it turns out I only
thought about doing it and then forgot to do it?"

It's like the feeling you get when someone messages you, and then you
forget to message them back because you had composed a message in your
mind, thought you sent it, and then forgot to do so.
Is there a word for this feeling or the action that leads to it(in English
or any language)?