What does “i don’t want to feel taken for granted” mean when a guy says that in a relationship?

As I’m getting to know him, i’ve been asking about what annoys him, dealbreakers, what he sees as red flags.. etc. i’ve gotten the same answer multiple times now. when i probe and ask like in what way, he’s still not specific. something like “in any part of the relationship i just hate being taken for granted”. Any help or deeper insight would be appreciated
What does “i don’t want to feel taken for granted” mean when a guy says that in a relationship?
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