I get INFJ every time I take the test. My girlfriend is a INTJ, and the two are supposed to go well together, which may be part of why we get along so well.

Beneath the quiet exterior, INFJs hold deep convictions about the
weightier matters of life. Those who are activists -- INFJs gravitate
toward such a role -- are there for the cause, not for personal glory
or political power.

INFJs are champions of the oppressed and downtrodden. They often are
found in the wake of an emergency, rescuing those who are in acute
distress. INFJs may fantasize about getting revenge on those who
victimize the defenseless. The concept of 'poetic justice' is
appealing to the INFJ.

"There's something rotten in Denmark." Accurately suspicious about
others' motives, INFJs are not easily led. These are the people that
you can rarely fool any of the time. Though affable and sympathetic to
most, INFJs are selective about their friends. Such a friendship is a
symbiotic bond that transcends mere words.

INFJs have a knack for fluency in language and facility in
communication. In addition, nonverbal sensitivity enables the INFJ to
know and be known by others intimately.

Writing, counseling, public service and even politics are areas where
INFJs frequently find their niche.