You Shouldnt Date Anyone This Much Younger Than You, Research Shows. Dating anyone younger than this can cause long-term relationship issues. So, per the rule, a 32-year-old could date a 50-year-old. While this rule has been widely cited, many experts suggest its used as helpful guidance rather than anything concrete

What do you call a person that dates younger woman?

cradle-snatcher someone who has a romantic or sexual relationship with a much younger partner (thefreedictionary.com)