Definitely. My husband had two previous relationships break up because, the women (each) said, "You're too smart for me."

My first marriage was much the same way. I didn't articulate it at the time (there were other problems), but he lost my attention... not because he couldn't keep up, but because I got tired of never being intellectually challenged. (He was and is a nice guy, just not the right one for me. I should have realized this when I discovered he owned one [count it one] book to be read for pleasure.)