Love sick

My ex, and now good friend came to me in total panic a couple of days ago.
The relationship of four years had ended suddenly without warning bells in advance, due to another lover interfering in the relationship.
I was reminded of my own pain when our relationship had ended exactly the same way, only was I the one left behind.
Ah, love sickness, what to do when you lose total control of all that matters.
When there seems to be no joy, no sorrow for anybody but your self, no sight on the possibility of happy life again.
Nobody and nothing can help you, but your own personal experience of love.
When you have lost a love, the only way to get love back, is to find love for your self.
Remember who you are, what you gave, what you have received and what you have to give now.
If what you have received has been all good, you can be grateful. You will find it again, just different.
Would there have bees serious issues, you might want to understand that time has come to develop, and that development in love comes with love sickness. Just like growing pains. Only is this inevitable growing pain, the worst of all pains.
I think that no man or woman can say they have lived completely if they have not once or twice been love sick.
My friend came to me and my counseling qualities for help, and I felt happy to have been there and to have offered my support. 
Still I could not refrain from thinking; well at least you now know what I felt when you left me the same way.
Thank God, I am still human.