I would say that a 30+ year old dating a 19 year old is creepy in general. The difference in life experience & power dynamics alone is a problem. But do you really think that you can't tell if someone has the mental capacity of an 11 year old?
What do you think it means when we say that someone is a fully functional adult? Do you really think that it's just about how old their body is? You know that there are people who are in their 30s who need legal guardians because of how their minds work, right?
