I've never really dated my Identical before, nor have I gotten truly close to it.
But when I was new to Typology, I was oddly enamored by the idea of ending up with a guy who's got the same personality type as me.
Blame the hype of introversion for that; tons of articles on how "similarity" is ideal, and how introverts do well with other introverts... And then my own negative experiences with certain extroverts in my life (ESxj people) made me think that extroverts kind of suck, introverts are the best... Add to that a general feeling of isolation and being misunderstood... So I thought, someone like me would be ideal, no? Finally someone who understands!
So I went on the quest of meeting and getting to know guys with the same personality type as me (online) and oh boy, have I made some experiences, haha!
Many of those guys turned out to be EII or xSI actually (and mentally disturbed, ha) and that didn't work, obviously. One of the Identical guys I could have been interested in ended up dating and marrying another Identical woman, ha! The other Identical guy was gay, haha. He was eerily similar to me. Same Enneagram type, same stacking, too. Getting to know him, I realized how annoying it can be to listen to the worries of your Identical, especially when they are also the same Enneagram type; you cannot help them! And they keep lamenting! I can sympathize but empathy can become tricky in that instance!
So I basically realized, that at this point in my life, where things are not particularly stable and I need to establish myself and gain more independence, someone who complements my strengths and weaknesses is a much better match. (Learning about Socionics and gaining more experience made me also realize that certain Extroverts can be pretty dope actually, so to speak.
)
But if I was an old single cat lady
with a rather stable life
and no luck in dating
and were looking for someone who understands me completely
and gives me an easy time,
I'd go for an Identical probably.
(Make this a Socionics poem/slogan.)
P.S: I have found that most happy Identity relations are between IxFx types with the exception of SEIs.
ESI-ESI is one of the most common pairings in general, ime.