In my experience, nothing adversely affects a friendship more than the following: Broken trust because of a lie or some other misdeed Distance (one or both parties move) Change of lifestyle (someone gets married, has kids, etc.) I've had friendships with certain people end for one or more of these reasons. And even the ones I've been able to maintain to this day have been tested by at least one of the above circumstances.  Keeping a friendship these days is not easy work. We all seem to be getting busier and busier with each passing year. But it seems forging new friendships is an even more arduous task. It isn't as easy to do now as it was back in college -- not by a long shot.  That's why it's important to keep the lines of communication open with friends you do want to keep in your life. Carve out a little time each week for a phone call or text message. Whether your friends live hundreds of miles away or right around the corner, you never know w...