Khosrow Sinai; Film director, screenwriter and composer who lived with two wives

Statistically, couples who have a little or zero age gap between each other have better and longer marriages. Among celebrity couples in Hollywood, the age gap gets bigger and bigger by year. Everyone might get attracted to youth, but actually dating with someone who is significantly older/younger than you is seen as something bizarre in a lot of countries outside the US. Again, it's easier for celebrities to find a partner.