2015 saw a number of Bollywood stars being linked up, but they kept us guessing all year long. Wonder if they will continue to play coy

Secret dinners, hush hush holidays, sweet exchanges on social media and more, but they will not admit to being a twosome. This year, a few Bollywood actors kept rumour mills buzzing for their off-screen chemistry with co-stars or industry outsiders, but they have still not confirmed their relationship status. A look at such 'couples':

Pulkit Samrat and Yami Gautam

The two started seeing each other while working for Divya Khosla Kumar's upcoming film 'Sanam Re'. By the time the Simla schedule began, they had become inseparable, claim sources. The link up buzz followed with cracks in Pulkit's marriage (to longtime sweetheart Shweta Rohira, Salman Khan's rakhi sister). The wife has confirmed that she is splitting from Pulkit, but he and Yami don't seem ready yet to talk about their relationship.

Alia Bhatt and Sidharth Malhotra

When they debuted together in 'Student of the Year' (2012), they were just as friendly as co-stars are expected to be. But somewhere down the line, the two seemed to have gotten serious about each other. Ever since they returned from their 2015 New Year holiday, they are speculated to be a couple. The buzz reached a crescendo when they began shooting for Shakun Batra's 'Kapoor & Sons' earlier this year. A long schedule in Coonoor and Ooty apparently ignited the spark. Alia has been clicked visiting Sid's home in Bandra though the two evade being spotted together in public. When asked about their relationship, they prefer to just smile. If the grapevine is to be believed, the two are going strong.

Bipasha Basu and Karan Singh Grover

Bips took everyone by surprise when she agreed to star opposite the television actor in the horror flick, 'Alone'. During the shoot, both were going through personal upheavals - the actress had parted ways with beau Harman Baweja while Karan's marriage with actress Jennifer Winget had ended. Initially, it appeared that their love story was a publicity stunt for their film. But long after the film released, Bips and Karan continue to paint the town red with their romance. The duo is often spotted at nightclubs and have even holidayed together. The two have been posting their lovey dovey snapshots on social media, but still refuse to admit that they are a couple.