What even sven said, both times.
Old joke: “He was a bilingual illiterate! He couldn’t read in two different languages!”
(And yes, I know that illiterate != stupid.)
You might want to re-think this.
In my case, my partner speaks about 6-7 languages fluently. I find this very sexy, in addition to all the other sexy things about him.
Sometimes we make love in Italian. Most of the time I don’t know what the hell he’s saying, but he gets his point across nevertheless.
It may have to do with if the other THINKS you are more intelligent rather than if you ARE more intelligent.