Iss Pyaar Ko Kya Naam Doon? S01 E115 Khushi gets farewell gifts

Khushi visits the Raizada house on Anjali and Nani’s request. She overhears Arnav getting angry with Anjali for inviting her. Later, Nani, Anjali and Lavanya give farewell gifts to Khushi. But Arnav then asks her to leave the house. Why is Arnav hostile towards Khushi?