Who is Chethan's dad?

I was sleepy watching dis film and i tink geeta slept with vikram and even mentions in her letter 2 him after she goes to the village, "our child chethan"... so im confused...

and where was chethan when siddharth and geeta were getting tortured in jail?

So wat happened to chethan in the end? In India with Siddharth's dad?

Does Geeta end up with vikram?

And does Siddharth ever return to India from London?

Plz help Im so confused!