He is 14 years older than her—not too far out of the realm of possibility... many guys are attracted to the same age woman no matter how hold they get themselves.
I guess I'm a sort of "age agnostic" -- age difference that I don't even notice seems to really alarm you! Congrats on being so perceptive!
The thing I often notice in casting is mismatched ethnicity in supposedly blood families being portrayed (not talking about racism, but Italians with Scots, or Irish with Swedes supposed to be brothers, etc). "Not that there's anything wrong with that...."
No, I think you misunderstood. I said in the film, Billy Crystal and Meg Ryan’s characters were supposed to be the same age. It was rather ridiculous when it was clear he looked in his mid 40s and she was mid-to-late 20s. She was playing the blonde shiksa fantasy girl for the Jewish fellas. Notice they never had a scene where she met his parents (at least I don’t recall), as the mama very likely would’ve plotzed (unless she was prepared to convert).
Might’ve been a more realistic casting choice to have had Carrie Fisher in the role (though even she was about a decade younger than Crystal), although they did have ‘em date in the film, but paired her up with “Harry’s” best friend.