Maitriasanga. Love without obstruction.Or love without limits or love without materiality,concreteness that obstructs .
Actually there is sanga and asanga.Sanga is limit,asanga is without limit,or impediments.
So why Sanga? you put limits,cause you start to control yourself on the gross body,speach an mind level.
Than slowly you progress on major forms of control more subtle and just contemplating the clean clear nature of your mind you ……..THAT’S IT.
shuseka 
LOOK INTO THE MIRROR OF YOUR MIND,ONE VALUENESS THE SECRET HOME OF THE DAKINI.GURU TILOPA
So even bad tought comes instead of upset,contemplate instead of cry,criticizing,just aware.
Again contemplate the subject the nature of clarity,it becomes again clear because its nature is clear.l.y.
Good and bad tought they are existent into clarity.
May be I put two water into this glass,
I shake,look like confusing,but the energy two water is still clean clear clear nature.this two water is still clean clear water nature,by shaking they do not become fire.thay are still clean clear water.