The foundation of true friendship

I was thinking the other day about what REALLY makes a friendship.  Unfortunately for me, I've had 'friends' that weren't really friends who at the first sign of 'heat' fled.  This generated pain - on all sides.

So, with the hopes of avoiding this in the future I have taken a step back to re-evaluate the whole thing logically.  Or at least according to my fallible logic.

As usual, I started a list.  Started writing down notes/thoughts about things.

I had a pretty decent list going and then started considering what was absolutely necessary at the very foundation.  And my list got pretty short; only 4 things:

Connection

Time

Genuineness

Unselfishness

CONNECTION:

As I think on this and consider my life experiences, I see this 'connection' as being like the spark for a friendship.  It's that thing that happens that generates a positive energy when interaction takes place.  It is a mysterious, joy-producing phenomenon that I walk away from thinking something like, 'I really like her/him.' 

It seems to me that this connection is random and I can't necessarily guess if a true connection will occur with another person until it actually happens.   Just because I have common interests with another person, or spend time with them, or if they are genuine doesn't mean this connection is a given.  So, God surprises me with these gifts - connections - with others; they are a marvel and amazing.

These people that I feel a connection with seem to remain in a cherished place in my heart no matter the space or time between us.

TIME:

To sincerely build relationship, time together is required.  Time to walk and talk of life and interesting things together.  Time to grow in understanding of personalities and backgrounds, strengths, weaknesses.  Time for tests of the genuineness of the friendship.  Time to build trust and understanding.  Time to share experiences and learn from each other.  Time to know each other and have a love for who each other really is.  Yep, time is required.

GENUINENESS:

To be involved in someone else's life requires true, genuine displays of what is real in the heart, mind and soul.  To live in the midst of friendship, it is absolutely essential to be REAL - no play acting a part.  This is what the foundation is built on and it cannot be anything but solid reality.

Yes, gentleness, kindness, patience, and tact are also important but for a relationship to flourish, it must stand on genuineness (both inside and out).  You can't put on a face with a real friend.

UNSELFISHNESS:

Mutual building up of one another based on unselfish kindness and true care for each other!  Much of the time this happens as a natural out-pouring of what already exists in the character of a person, but sometimes you become involved with someone that, quite honestly, can't move beyond self.  A true friendship cannot survive selfishness.

That's it.

Am I right?  Am I missing anything?  At the core that is.  I do realize other attributes of friendship result as the above play out... but did I miss anything foundational?

Just musing and trying to figure life out... in an effort to not have perpetual poop on my shoes.