why is zaki so confused?

Zaki is so confused. He himself is not sure if the child is his or not. He even admitted it once-"kahi yeh baccha mera nikla toh?" I think its because he has stopped counting and he has no idea about anything now. Also even if he's not samaira's kid's dad, then he might have a baby somewhere else.think arzoo. But what if sahir also has a baby in boarding school. NO! Oh, and maybe zaki is not even confused. Its his default face. Because 90 percent of the time he looks confused and constipated!