Depends if you want a safe and subtle approach or if you are to risk it for the biscuit from the get go.
If you feel like you can skip all of these steps, then be your authentic self. Discuss theories and more than likely what you see in the future (it could be about anything).
Appreciate their subtle "planting seeds" moment where they covertly try to fix your problem in a logical manner (Te). Try to use your intuition to somewhat predict what your INTJ is feeling (they will hide it from you). Try not to to be too aggressive about fixing their emotional needs. Make them understand that you understand how they feel.
I would only worry about arguments where the INTJ is less inclined to tell you that they are wrong. You might want to establish boundaries (unless you are willing to get walked all over) with your INTJ. If you see a potential future with them then I bid you good luck.
Hopefully this helped.