@raschel My extroversion and introversion are not balanced but because of my strong Fe, many people mistaken me for an extrovert because I talk a lot with my friends (not so much with people who aren't my friends). I used to also participate in class discussions and raise my hand a lot (thus earning a teacher's pet status which was useful because they wrote me excellent recommendations for colleges & for work later on). I think the assumption that Intuitives will find another Intuitive to be a kindred spirit to be somewhat of a stretch. You have to factor in how sociable this person is. Are they concerned with other people? If they are an intuitive but the most isolated/loner/homebody type, hey... they will not have a response to meeting a kindred spirit. If there is no desire for relationship, doesn't matter if they are the most compatible person on earth for you. You get what I'm saying? I found that out with INTJ's. They were the loners. They might have only 1 person to celebrate their birthdays with simply because they aren't a "friend" to others, so why would others be a friend to them?
At work, conversation is SOOO much easier for me than any other realm. First of all, simply how much time you spend at work versus everywhere else. Second, because I wear clothes that sparks conversation, people approach me and compliment me on my clothing. They also like the decorations I put on my desk and will talk to me about those. It's like generally presenting yourself in a way that you will attract people based on curiosity. (How to overcome fear? Curiosity) I've found that even if someone was very timid, their curiosity would still cause them to want to speak to me. (Thus making me approachable even to the most shy, mousy people on earth)
As for your definition of friendship, depends on what you are looking for. I know that males and females define friendships differently. Many married men only have 1 true friend (their spouse) and so when they get divorced they are devastated. I obviously don't live with any of my friends, although it's important that for someone to be a friend I must have at least set foot in their house. If they only want to meet me in a public place, we haven't yet crossed over to friendship. As close as a lover?? Unfortunately, my friends don't believe in that kind of commitment outside of a romantic relationship where an engagement and jewelry is involved. I used to be very committed to my friends until I realized that they could live without me and didn't really care either way... so I had to adjust my expectations and my commitment to them as well. Now, if one of my friends wants to hang out I will not hang out with them unless I have nothing else on my schedule. (Because they will be more inflexible about which days they can hang out and only present me with like one or two options) When I can see this bias where they are not willing to inconvenience themselves for me, then I cannot sacrifice for them. (Note that I am still willing to inconvenience myself for them, which is still an unbalanced relationship where I give more than they are willing to but somehow that's the selfish society we live in nowadays)