Methylchloroisothiazolinonephobia

There's gotta be a better way to connect with someone, whether or not you've known them for 5 minutes or 10 years. Platonically speaking, have you ever felt that sense of mutual comfort with a close friend when you know that without a doubt, that you can call this person after midnight if you're dwelling over something? Or, have you felt comfortable enough with someone whereas you can contact them at least more than 3-4 times (sometimes 20 in some cases)? And how do you know for sure, that this person is welcoming your phone calls, texts or emails? If you say, "Well, they answer back," then I'm going to say, "Well maybe they're just being polite and then pulling their hair out afterwards." I sort of become leery once I see the red flags, especially with a new friend. At the risk of sounding seasoned in my years, I sort of become reclusive once someone tries contacting me more than a few times out of the day, unless it's my wife of course....