Some of the following information is borrowed from the INTJ forum, where nerds like me discuss the traits associated with the Myers-Briggs personality type Introverted-iNtuitive-Thinking-Judging (INTJ).

How does an INTJ show they care for or love someone?

Initial Romance/Crush

By freezing up utterly around them.

By avoiding them actively to avoid the freezing up.

By going from fully confident to zero self-confidence in three seconds flat around them.

General stiffness and awkwardness.

Actual love/affection

Being in the relationship. If there were no interest or affection, the INTJ would be single.

By becoming experts in the person so loved, to the point of accurate prediction of that person’s actions and thoughts from observed data.

By yielding some of the precious autonomy to put that person’s interests first.

By making the effort to empathize and understand the other person, in marked contrast to thoughtlessness normally characterizing INTJ social interactions.

Physical affection.

By expressing one’s thoughts and feelings, personal life experiences, and ideas with the other person.