Iss Pyaar Ko Kya Naam Doon? S01 E105 Khushi is in love with Arnav

Arnav is mesmerised when he sees Khushi in a saree. Khushi realises that she is in love with Arnav. She imagines herself and Arnav as a couple. Shyam tries to cheer her up by getting sweets and decorating the house. What makes Khushi realise her love for Arnav?