Hi, I'm new here and I study ESL with a friend. During a study session he shared the following sentence, which was part of a composition.
In the sentence: "But before Mark could get very far with his plans, he had remembered that he didn't like her that much, so he went back and gave up"
In the second part (he had remembered) should I use past perfect or simple past, and why? It's my understanding that he could rewrite the sentence and maintain everything on simple past. But he argued that "remembered" is an action in the past before something else in the past, so it should be in past perfect. And please point out any other grammar mistakes. I appreciate the attention and thank you in advance.