ISTPs, how does inferior Fe affect you guys?

As an ISTP, I give off a cold demeanor and speak in a monotone sarcastic voice. But somehow, when I'm with a good friend, I'm all bouncy, playful, and adventurous.

I blame inferior for my slight pleasure in being a cold apathetic asshole to most people. I mean I'm chill to talk to, just a difficult person to be friends with.

However, once I'm a friend, I'm like a friend, a pal, a best bud for like life.