Geography also plays a role. Very similar story happened in my hometown growing up, 15 years old pregnant from an 18 year old. Thing was, it was rural Saskatchewan where people and their families grow up together their entire lives, and those two families lived a mile part on farms. Ride the same bus to school everyday, help each other with farm work every year, those 2 dating wasn’t even blinked at.
At the same time though, just the number of an age gap isnt a be all end all….there’s a massive difference in an 18 year old and a 13 year old vs a 23 year old and an 18 year old when it comes to so very many things in life.