<human>: I met this person through gaming last month, and we hit it off quickly. We have a similar sense of humor and share many hobbies. He constantly comments on the fact that we have much in common and says I'm one of the most interesting people he's met in a while. I thought the same about him at first.

Unfortunately, to be frank, I've learned that he is incredibly pretentious. He constantly speaks about how much smarter he is than other people and how he's better than them. He brings up his IQ and test scores in most conversations. I think he's created this image of me as his ideal person, which I simply am not--he says things like "We have so much in common. Not many people are on my level intellectually. You're one of the few people I have trouble reading."

It's all too much. I appreciate intelligence, but not arrogance. If he didn't have this issue, I would love getting to know him, but I can't take him seriously when he says these things. However, we talk every day, and I feel that he wants to be good friends.

How can I break it to him tactfully? (I'm not particularly skilled at social interaction.)

Can you condense the text into a few key points?
<bot>: How can I tactfully end a relationship with a person whom I cannot stand, despite that he likes me a lot?