Sidharth Malhotra spotted with a mystery woman on his birthday. Picture Courtesy: Sidharth Malhotra Instagram.

Sidharth Malhotra, who has more often been in the news for his relationship status with Alia Bhatt, was spotted with a mystery woman on his birthday eve! The reason behind Alia and Sidharth's relationship going downhill was apparently the latter's growing proximity towards his best friend Jacqueline Fernandez. Reportedly, Alia was irked by this closeness and therefore things went sour between her and the 'Gentleman'.