I saw not a single wrongly supposing themselves as EII on forums. At best those were ESI, mostly seems Fe ones.
The examples are: Beautifulsky (EIE), Delilah (SEI), aster (ESI), a bunch of IEIs, a Ti, ... Any woman who claims to be EII gets my higher attention to understand is it so. I noticed many ones. The majority were not EIIs. If you'll try to play EII as those were described, you'll fool noobs mostly and many ones will not disagree with you openly as are not sure or do not want to upset - this may support your mistake. For me the doubts start from the avatar and with photos, some your commuications - I'm sure against EII and mostly suspect EIE. And taking the situation with mesn, - EII would not tolerate such unreasonable and rude dude near her.
I suspect many of them hold to the mistake as have or had relations with those to who assigned a type having good IR with EII. It's expected as harder for F types to accept the reality as more important than emotions yours, and sometimes of that other one to disappoint by the truth who you'd not wanted. More the problem with the reality becomes with the lack of understanding of the types theory and the usage of baseless heresies, what makes easier to fool yourself and mislead others the majority of which are rather incompetent.
From long time view, the truth is better for your emotions. As it allows to do better choices.
Also sometimes mistakes with the types does not mean bad or worse IR, as in case of mesn his type is no way LSE and EII is doubtful to be good for him. He's Fe valued, according to his hysterics style. base Fe most possibly. there is a small possibility which is hard to reject still (including because he've broke own promise and has hiden video info about himself) about LSI as his type. though you behave closer to Fe, is your type F is not clear for me too still, without your video. your IR with him mb not bad, at least.
Also besides Jung types other factors attract people too.
So to hold to EII by any means is not reasonable strategy in your situation. The truth would be more important. To get the help with this needs your video. With the existing info to say the assured concrete type is difficult. It's possible only to reject some types as EII. Without external help you may read books and to type people near you IRL and so to understand own type yourself. This mb harder without knowing what types are more possible for you.