My boyfriend and I have 26 years between us. We are different in a lot of ways but at the same time we both feel very comfortable with each other, like "home". Our personalities really balance out. We're soul mates, basically, that's how it seems, and he uses that term himself despite being a very down-to-earth ISTP. I'm an INFP, though I'm pretty much 50/50 between S and N, so the ISFP description fits me pretty well too.
Recently, he took the MBTI and came out as ISTP (slightly Introverted, moderately Sensing, very expressed Thinking, slightly Perceiving). It fits him really well but some parts of it are a bit disconcerting.
I've always been an "old soul" and I tend to feel old with guys my own age or even a little bit older than me but at the same time I am very much a kid (the classic INFP personality I guess). He's the same way, not jaded like most older people, and very youthful at the same time in his being very genuine like me but he is responsible and very calm and relaxed about life, except when it comes to his duties, so he is mature.
I just want to know from any ISTPs and anyone who has any experiences with older ISTPs and whether you thought that with age, they become more philosophical, tender, etc. I know ISTP is supposed to be an "Enigma" for iNFP and vice-versa, but he really isn't. He says he can read me like a book (but then I don't like to argue with him so I don't try and make it tough for him) and communication tends only to break down whenever we have to be apart for long periods of time, especially when we can't just ring one another up and email/texting is the only option (I know, texting's rarely a good option)
I wonder if maybe, as ISTPs age, they become more open to the world of possibilities and more in touch with their spiritual path. I've asked him what he was like when he was younger, if he was much different. He said he was probably more sure of himself, more aggressive, (more of a total dick I guess :-P ), and more spontaneous.