Yeah the most common experience I noticed with SLE-EII relationship is that the EII tends be offended, or feel off put by the SLE's joking comments. They take it personally even if it's just them picking/playing. Insecurity is not type related, but both of these alone can be a recipe of disaster if they're both insecure and project onto each other. An EII tries to avoid confrontation and conflict - even if that conflict will air out grievances and give every party closure to move on. SLE seems to thrive on it almost to the point they purposely pick at the EII - they don't take them seriously at all and don't know where they really stand with them since the EII will quietly deal with their feelings till they can't any longer then it's too late.