To add to my redefinition of friendship, I present to you : Band-Aid Friendship
The Band-Aid Friendship is a healthy blend of the Situational Friendship, the Occasional Friendship and the Now Friendship.
The Band-Aid friend is the friend who's only there for a short period of time in your life similar to the Situational friend. They can be a co-worker at a contract job or a temporary neighbor with whom you get along wonderfully but you know that when their time is up, it'll be over very much like the Now friend.
What makes the Band-Aid friend unique is that they are there to tide you over until the next one comes along. They are the friends you need in order to make it through life without hating everyone. You care, they care... just not enough to pursue this when it gets too complicated or time consuming. What's so wrong with that?!
Going through life without any Band-Aid friends or even refusing to make Band-Aid friends for fear of getting hurt is like asking to be miserable. It astounds me that some people don't seem to grasp the importance of this kind of relationship.
They are kind of like the lifeboats in relationships. Between two serious boyfriends, the Lifeboat Guy is the one who'll keep you entertained but you don't necessarily want to commit to. He's the guy who's cell phone number you keep just in case the new Relationship Potential Guy you're seeing doesn't quite work out. A safety net of sorts.