These are some circumstances for an INTJ I can think of;
(I know the tone sounds a little instigative, please don’t take it that way.)
- You’re simply not my type. I can tell we won’t be able to clique well, so I won’t even bother trying. I don’t know the full reason yet but my intuition is telling me so.
- You’re too close-minded. There is no way I can talk to you, so I won’t even bother trying.
- You’re basically an a**hole so again, nope.
- You’re boring. Next.
- You’re too superficial for my taste.
- You’re morally bankrupt.
- I feel unsafe around you.
- I feel manipulated.
- You have a tendency of attracting danger.
- I don’t see us in a long-term friendship/relationship. If I can’t invest in you, I don’t see a point continuing.
- I’m in a crisis, I can’t deal with you now. I have to attend to my problems (and solve them independently, on my own).
- I don’t want you to fall through the cracks of my problems.
- I secretly have a crush on you, so I don’t want to pass off as a creep and chase you away, in case I pour out my emotions about you too much.
- I was betrayed recently. I need time to recuperate.
- I was betrayed. I don’t know how to trust anymore.
- You haven’t earned my trust yet.
- I don’t know anything about you yet.
- You’re either a parrot or a lemming. I don’t deal with conformists.
- Circumstances don’t allow us to be friends, so we’ll just have to move on.
- You aren’t capable of understanding/empathizing with me, so why bother?
- You’re emitting a rather bad aura. There’s something about you I can’t quite put my finger on, but my intuition is telling me to avoid you.
- I know this is just being selfish, but you’ll have to open up to me first. That’s the easiest way I know I can trust you.
That’s all I can think of. There are probably 101 reasons more that an INTJ won’t open up.
Edit: Maybe writing in 1st person wasn’t such a good idea. I’ve given readers the impression that I specifically think like this. Bad idea. :/ If only people knew how to read this objectively.