Some more background for people who care. I've known his girlfriend for about 15 years now. I've known him for about 8. I met him when I started running public games of 4e LFR at the store that his girlfriend worked at. She broke up with her ex bf and didn't have a place to go so she moved in with me. Back then he wasn't really my friend. I used to complain to almost anyone who would listen that I had to deal with his stupidity at my table when he would show up. He offered to run a game and read the entire thing in monotone extremely slowly and he didn't know what the word constable meant. So we never let him run again. I wondered if he could read. I put up with him because it was only once a week and the game was public.
Then after about 4 months of him showing up for games his girlfriend told me she was going on a date with him and I asked her why. She knew how much of an idiot he was. She said she knew that and agreed with me but he was good looking and she had just broken up with her boyfriend and wanted something not too serious. Then, somewhere around their 3rd date she never came home. 3 months later she still hadn't come home but paid me rent at DnD. Finally, she told me she had decided to move in with him and set foot in my house long enough to grab the essentials and let me keep everything else.
My opinion of him hasn't changed in the 8 years. He is dumb. He is constantly suggesting REALLY dumb ideas to problems in our games. The ideas are bad enough that even his girlfriend is constantly saying, "I love you. But that's dumb." Other people ignore his ideas mostly, but I tend to get frustrated over people being stupid and I admit, I let him get to me and sometimes over the course of a session I just get more and more angry that I have to put up with this. But I do, because I've been friends with his girlfriend for 15 years and she is one of the best role players I know.