I think that there are very different mile stones people go through in their 20s that can make dating somebody even a year younger pretty awkward. I think being at least 21 is a given because drinking legally should be something to account for, and if you’re both still in school. Personally it would be weird to date someone who is so far ahead of me and has a career even, if I’m personally still in school. I want to be treated as an equal not really someone to look after. But that’s just me