Yeah, I know what you mean about people who take things the wrong way.

Part of the problem is that texts and emails are VERY easy to overanalyze, and people VERY much tend to overreact. For example, you might send a friend a text that says "Sorry. Can't go to the movies tonight. Have to babysit." Then your friend reads it and goes, "Okay... cool." Then they take the inevitable second glance, "Wait... is there some implications here?" Then they read it again, "Wait. She's attacking me! This is a personal attack! She is lying to me so that she doesn't have to go to the movies!!!" Again, they read it, "WHAT A B*TCH!!! SHE TOLD ME SHE COULD GO TO THE MOVIES, BUT NOW SHE HATES ME SO SHE WON'T GO. SHE LIED TO ME ABOUT THE MOVIE!!!! I NEVER WANT TO TALK TO HER AGAIN!!!!"

I've met some people who are so damn cynical that they literally think everything you say is a personal attack against them. (Not saying that's the case for you, but I'm just saying it pisses me off.)

Anyway, I tend to let go of friends too. I used be very close to some people, and when they pushed me away, it hurt. So, now I distance myself from everybody... except for people online (because I can trust them more, oddly enough). I'm not saying it's the right thing to do or the best way to handle it, but that's what I do.