INFJ here! (waves), and I have a question for you ISTJ's. Most of my closest friends are ISTJ's -- we sort of gravitated towards each other, lol, in the sense that out of all our other friends, we became the closest. Our friendships are definitely one of mutual respect, though I think we both think of each other as slightly mysterious.
Anyway, here's my question. Recently, an ISTJ friend of mine broke up with his ENFx girlfriend of ~9/10 months (long story). Before the break-up, he had mentioned some things his ex had told him about our mutual acquaintances (ex; how so-and-so had wronged her and how so-and-so was this and that). She was pretty dishonest in these matters and said some false things that made several people look really bad. I could tell he was trying to remain logical about what he heard, but he definitely did so in her favor (i.e.; he would rationalize things so that they supported her). I guess this was because he really cared about her, but I can't tell where he stands on these things anymore.
In my opinion, it's really offensive if someone is dishonest with me or others around me, especially by spreading rumors. It might sound counter-intuitive, but usually when I hear "things," I can sense whether it's exaggerated or where it's coming from. So even if it's a very close friend or family member, I tend to take things with a grain of salt. However, I noticed that this ISTJ friend was always siding with his ENFx girlfriend. So what I'm wondering is this: how do you react to rumors about others (especially if you hear it from a loved one)? And also, in a situation like I just described, would you still believe in these things even after the person you heard it from lost your respect?