I must have watched some other episode than those people, coz I didnt see a SINGLE person anywhere near that place. That is a REMOTE corner of the village where RARELY ANY people go. Thats the reason Anandi needed rescuing in the first place when Shiv saved her for first time. If that place would be "in front of the whole village" then Shiv would not have needed to rescue Anandi, the "WHOLE VILLAGE" could rescue her that day.
They were specifically conscious that there were no one nearby to watch them, thats another reason why Anandi took Shiv to that place other than the fact that it was their first meeting place. And they didnt go there to have a "vulgar" romance in the water. They fell in the water "ACCIDENTALLY", and what follwed was a "SPONTANEOUS" reaction which can happen to ANYBODY when they are in love.