Hahaha...well...I suppose this might be a little *ahem* out of place in the current conversation, but I guess I'll still put in my two cents.
For one, I guess I'll point out that there are countless reasons why I don't use MBTI to choose potential mates. It's a dead-end, close-minded way of becoming intimate and often "perfect matches" according to MBTI can be absolutely horrible. Not to mention the different experiences that different people have with other different people :P
I'm sure that everyone is aware of this. Yes? Awesome!
I'll go on to share my experience with a male INFj. It was....one of the most challenging periods of my life (to put it simply). We were very similar, but in ALL the wrong ways. In the ways that we could have been similar and it would have been complimentary, we were very different. It was a turbulent and emotional experience with this strange "tug-of-war" when it came to our feelings. Also, our "J"s were manifested in very different ways, which was chafing.
Again, this is just ONE instance and ONE experience with ONE person. I can't say that all INFJ/INFJ pairings will be train wrecks (and, to be fair, I don't regret the relationship one bit), but this one certainly was. I think it had more to do with the kind of people we both were and less with our personality types.
Umm...as far as an ideal "romantic match"? I can only give you my personal opinion, because some of the suggestions of people on here seem odd. I could break it down T-style as such:
I vs. E
Es, while fun and lovely friends, can make me feel stressed out after long periods. Since I'm an outgoing introvert, I don't need an E to "bring me out of my shell." Thusly, I think that Is are much better suited for me. We get the "need to be alone" thing and we'll act on that and be happy for that. Es don't get it and, since I am an outgoing introvert, usually push me past my limit thinking that I AM extroverted (leaving me stressed and unhappy).
S vs. N
Um...I am a very strong N and being around Ss for LONG periods of time usually leaves me feeling empty, stressed and sad. Of course, they make great casual friends and I can glean from them some wonderful moments in life. However, marrying one is something completely different. Ns are simply essential for me to feel fulfilled.
J vs. P
I love Ps. They're fun and spontaneous and a never-ending source of silly for me (of course, I speak of ENPs). They're way of "organising" their lives is something I'll never understand. Um...of course it depends on the P, how strong it is, etc. but my experience is that Ps in large doses usually stress me out. Js are tricky, however, because if they don't manifest it in a similar way to me, we can just clash (in certain aspects, not all, of course). All in all, I do prefer Js.
This leaves an INxJ. I already know my experience with INFJs, but, of course, I can't rule out ALL INFJs (just that one ). I haven't met another INFJ male since, so I really can't tell. I do know that I get along really well with INTJs (my dad is one...and we all know that Freud thing). Thus, my logic and reasoning leads me to INTJs. And my heart? She agrees
(and this post: long-winded, states the obvious, states what's already been said, isn't very helpful to Sir/Madame Thread Starter)
Heck yes we do.
Jeez. Don't they teach you ANYTHING at them Yank-academies?
...Ahem. Sorry. May I interject?
Just throwing another vote in there for the 'ENFP-INFJ' matching. (Not that I'm biased or anything - obviously)
I have myself a little INFJ I like to keep under my bed (bringing him out now and then under the term 'boyfriend' - when he's good) and we could not be more right for each other.
(Granted, he's not a super introverted-introvert, nor a particularly strong 'J' - just as I'm an extrovert who appreciates 'alone time', and whilst warm and fuzzy - not a hardcore feeler, make of that as you will)
We ground each other in totally opposite ways, whilst sharing ideals and general world view.
Enough in common to really be able to see through each others eyes, enough difference to fuel debate and interest. 'Nuff said.