ISTJ + INFP

These two are nearly opposites (only one preference in common). A mutual desire to grow and mature as individuals is required for this coupling to be successful for the long haul. This isn't a comfortable match but can be a life-changing one.

Historically, marriage counselors will see opposites marry and divorce and interestingly find the same opposite types to marry again (and sometimes divorce -again). There's always a yearning to "complete" one's self with an opposite type, but it really doesn't work out. If it does work out, it does not do so without a long series of painful reckonings. Intimate relationships need common ground for expression.