Ranvijay Kisses Diya

Gunjan hears Diya say that a guy offers a red rose to a girl out of love. This makes Gunjan believe that Samrat loves her. She buys something that she thinks Samrat would like. Later, after the Principal introduces Ranvijay to everyone, Ranvijay kisses Diya. How did Diya react? What did Gunjan buy?