1) Dev is happy go lucky but has full control on his buissness. In any other serial they would have shown hero will give up on his work.
2) Unlike other serials post divorce Dev is aware of Sonakshi's whereabouts. Which would actually happen in reality.
3) Sonakshi's fear when Soha was about to call Dev was so real. She is not shown to be a superwoman but a normal mother with her own fears but has learnt to look beyond fears.