He is smarter than me, and I am of afraid of that?

A university colleague has fallen head over heels for me. Or at least he claims so. Moreover, there is an undeniable presence of strong sexual chemistry.
Thing is, he is very highly educated - he's not just certified to be, he really IS a great erudite. I used to be praised by teachers and schoolmates during my high school education. I have a fast thought, and I cannot say I am dumb. Lately I've been feeling really down, after breaking up with the person I loved most.
This colleague of mine tends to be jokingly critical, while I get offended very easily. I know it's a lot better to have a guy who motivates you, rather than one who drags you to his lower level.
Yet I realize you cannot master a smarter man... or can you?
If I make a mistake in our convo, simply because of my insecurity, he points it out and that insults me. I don't show it yet. I let him think he's Napoleon. At the same time that deteriorates my insecurity.

Should I go for it? I wouldn't change myself to impress him. I only wish I'd feel equal to him. Maybe he's the insecure one and likes to stay on shiny pedestals. This is a terra incognita for my personal experience!
He is smarter than me, and I am of afraid of that?
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