Which age gap pair is more common?

My boyfriend and I were talking about age gaps. We're 8 years apart. I was saying it's more common for older guy/ younger girl and he thinks older woman/ younger guy is more common.

Older man/ younger woman
Older woman/ younger man
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A total of 20 votes were cast: 5 girls and 15 guys. See detailed results
Which age gap pair is more common?
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