I agree here. I was invited in as well, but I simply could not relate. They were very, very intelligent people and I felt as though they spoke another language and I could not keep up. And there was a missing element. The inability to socialize, at least not in the way I did. It certainly didn't make me feel good about myself.
I do not believe that intelligence is measured in how many degrees you have or what kind of job you do. Some of the most thoughtful and insightful people I have known have GED's and work blue collar jobs. A degree does not determine how smart you are. However, I can appreciate that someone worked hard to earn that degree and will congratulate them on it. I would certainly not be resentful or jealous of it, nor accuse them of somehow beating a system.
Regarding the mate part: I went out with a guy a couple of times who was very smart and an engineer. I don't know much, if anything, about engineering. As a result, not only could I not add anything to the conversation, not that he noticed, but I was bored to tears. I went out with another guy one time. His conversation consisted of video games, which I don't play, and reality TV, which I hate. Both of them were very nice guys. Neither were interested in topics outside of their own. I could not relate to either one of them intellectually.
Personally, I need someone who loves to read, is interested in other cultures, likes to travel, enjoys debates and likes to hear opposite viewpoints without getting angry, wants to learn new things, and isn't satisfied with "this is the way it is and I'm not listening to anyone who says different". They don't have to have the same IQ or education as me, but they have to want to do more than sit in front of a tv and watch sitcoms. I HAVE to have someone that, if I read an article about something going on in the world, they are interested in sitting down and talking with me about it. There are people who don't enjoy that.
I did remark earlier that I would not date a stupid man. To me, a stupid man is one whose conversational skills amount to boobs, pussy, rascist and fat jokes, and who are too dumb to realize I am offended when I tell them to knock it off. When I was younger, I went out on a date with a man who took me dancing and proceded to loudly make rascist comments about the hispanic people around me. He was so busy laughing over what he thought were witty and humorous remarks, he missed my reactions, and then had the nerve to look surprised when I left him on the dance floor alone. No doubt there are some women that would have found him very amusing and smart. I did not.
So, I do not think being too intelligent is a drawback, but I do think that not being on the same level of what you yourself considers to be intelligence to be one.