If you do a Bible search for the phrase age differences in relationships, you will find exactly 0 results.
In fact, a person’s age is rarely mentioned in Scripture, and this holds true for married couples in the Bible.
We just don’t know of couples’ age differences in the Bible.
Abraham and Sarah are the exception; we do know the age difference between those two.
When God promised Abraham that he and Sarah would be the start of many nations, “Abraham fell facedown; he laughed and said to himself, ‘Will a son be born to a man a hundred years old? Will Sarah bear a child at the age of ninety?’”