After reading some other people's comments above and especially the book chapter above I've decided there's a good reason for me to abandon my worries on this issue and actually not to actively befriend those Catholic that I've mentioned anymore, because they're either worldly or modernized, and there's nothing holy in forming friendship with them. I only worried about being socially indifferent because I thought it would be against charity, but looks like it's not.
 
Also I don't know how some people on this forum would talk with people in your daily life, I appreciate all of you responding, but I think some were being quite rude in this post. Even though I think I usually am quite frank, I don't think I would say things the way like "I think you have disorder" or "I think you're a troubled person" You really don't need to say those if all solution you offer is "go pray about it"

And since we got this far, I'm curious, are all of you fond of babies? To me, a lot of time, they are just really irrational and unpredictable, that's why I'm afraid of them.