Bryan and Carolyn are dumb

I just rewatched this movie for the first time in about seven years and it finally hit me that Bryan and Carolyn are really stupid. Sue Ellen refuses to tell Bryan where she works, makes his frustration about her not letting him pick her up from work about him being pissed that she doesn't want to meet his sister, then defends the "back-stabber" at work. And then after all that, when he's talking to Carolyn about it at GAW, Carolyn sees Sue Ellen and asks, "Is there a problem Sue Ellen?" but when he turns around no one is there. Sue Ellen is not a common name. Carolyn was stupid, too. If her brother told her the girl he's dating's name (Sue Ellen) and that she was secretive about where she worked, how could she not have even thought that was weird? If the girl's name had been Amy or Lisa, ok, that could be anyone...but Sue Ellen? They kind of assumed we were too stupid to catch on to all of that, but they were right - for a lot of years I was.