NT Conceptualist to NF Idealist
Marriage to an Idealist is probably the best option for a Conceptualist. NTs and NFs share an abiding interest in the abstract, internal world, and so can find with each other a companionship of ideas, a mutual love of insights and concepts, even a similar fluency for the abstract language, that bonds them securely. At the same time, NFs bring a personal warmth to their relationships which appeals to the analytical, self controlled NTs, and helps them put aside their work and take time for a personal life.
Conflicts, of course, are inherent in all relationships, and even so with the NT-NF relationship. If sharing ideas with an NT means arguing over definitions, logical categories, and necessary consequences, it is onerous to NFs, who are willing to engage in such debates for a short period of time, and only if the discussion remains friendly. And conflict between the NTs cool resistance to showing emotion and the NFs desire for emotional expressiveness is an endless problem in their relationships, though one that usually overshadowed by these two temperaments' rare compatibality.