Can lovers remained friends?

Good friends  often become lovers if they are not married. But, can they be friends after they break up. If it is a lover's spat , then it is only temporary and it is still reconcilable. If it is a permanet break, is it possible to remain friends? It takes great heart or pain ,just to see each other.

This kind of incidents happen at  my yoga session.  Both of them ie Z and I get to know each other during our yoga  class and they gradually get close together.  In the beginning , they came by  seperate cars and soon , they came in the same car. They practice yoga in pairs .

Z was married but was divorced and on Saturdays ,when I was working, Z will bring his children to attend the yoga class'.  Z's children never practice yoga with I.  This was pretty okay.

One day, they came separately and they acted as if  they do know each other., We were shocked but we acted as nothing had happen and business as usual.  We thought it was a temporary lover's spat but we were wrong. They placed their mat far away from each other and they never talk or look at each other.

The situation was getting abit akward when I came with a bandage on her both wrist and everybody have a wooden facial expression including Z.  It is so strange that strangers became good friends , then they become lovers and then became strangers again.  It had came a big circle.

I believe there could have been a misunderstanding  or wrongful act by either party which can caused such a relationship to break up. There could be thousands of reasons but this is besides the point.  Both person can come to the same yoga class and pretend nothing have happen and they don't know or care about each other.

Both person is trying to carry on with their live by talking to their fellow yogis but it was never the same again. The happiness and the rapport is no more there. I think Z should let it go by not coming to the class anymore. It caused an unpleasant ;feeling or sometimes an eriee kind of silence.

However, yogis become yogis , we have matured to a certain extend and try to bring such negative vibes out of the class.  I hope the incident would not make the feeling worse  or erupt in a big way.  There is a feeling of great pain and restrain in the air and hope that time will even out the negativity.

Lets pray and bring the Universal force to solve this matter in the best way possible. Meanwile, let it be .

Namaste.