It could be that your ADD distracts you from missing social cues. Hard to explain without a thorough evaluation. Do you have trouble recognizing faces sometimes or do you not understand facial expressions? My mom thought I had Aspergers once, but I always understand facial expressions and the sublties of social communication, its just that I missed them because I was distracted either by zoing out or distracted by external stimuli. Probably due to bipolar disorder/add.