Ideally man is 5-15 years senior...
Ideally.
Ive seen no marriages with man over 5 years junior last
Im sure someone here will correct me but it’s my.observation
My wife is 16 years younger than I am. We work great together in our relationship. She has 5 sisters and 4 brothers all older than her and I am a single child - could be why she puts up with spoiled me.