Jab-Jab tanhai ne unko sataya hoga,
tab-tab unko mera khayal aaya hoga,
ghum yeh nahi hai ki woh bhool gaye humko
ghum yeh hai ki Ro-Ro kar Bhulaya hoga.
We cannot tell the precise moment when friendship is formed. As in filling a vessel drop by drop there is at last a drop which makes it run over, so in a series of kindness there is at last one which makes the heart run over.