Friends Dynamics

I think having friends is one of the best part about being a teenager, but i think every friendship has a different dynamics, sometimes one party gives more and the other party gives less other time the other party doesn't give at all, it is almost like a dating relationship only without the sex part-sometimes. But the dynamics each differs for example the guy could have serious insecurity problems he always wants his ego brushed, but likes hurting the ego of others. Or is the backstabber friend who appears to be all good in the front but behind is the worst enemy or the super-rich entitled prick. Trust me i have seen them all.