When Naina is deep rooted in her love, Sameer is still flying high. Naina has just planted the tree and Sameer is flying around it. The tree will grow and the time will come when they will prepare the nest for future.
As Naina grow up in a protective family and with a role model like Chachji, her character has already took a proper shape but when we see Sameer he grow up without a proper family and his life is a craving for warmth of a home. There was nanaji who gave him enough love but he never had a mentor to mold his character. He always lived in a hostel only used to visit Nanu in holidays. Nanu had just started to mentor him but he died and Sameer boat has again became sailor less. His character is like sand it fly away with air.
When he is with Naina it acts as watering the sand and it settles down for some time. when Naina is away for some time it dried up and he is again got unsettled. Now, in future we will see that Naina is not only watering him to settle down but also she herself will become like cement like character for Sameer and together they build the future, just like right amount of cement-sand-water mixture needed to make a strong house.