Rumours around Sussanne Khan and Arjun Rampal's affair have started doing the rounds again after the "Roy" actor was reportedly spotted at Hrithik Roshan's ex-wife's birthday party.

Sussanne celebrated her 37th birthday on 26 October and reports suggest that Arjun Rampal wrapped up his "Rock On 2" shooting in Shillong in a hurry so that he can celebrate with the birthday girl.

According to a report in Bollywood Mantra, Hrithik's former wife Sussanne had a party at a night club in Mumbai along with Arjun Rampal and some other close friends after she celebrated the day with her parents and two kids.

Arjun took to Twitter and informed his fans about the end of "Rock On 2" shooting and his departure from Meghalaya on 26 October, which happened to be Sussanne's birthday.

Although it is not clear if the actor chose to leave for Mumbai primarily to attend Sussanne's special day, but rumours about them being in a relationship started doing the rounds again after the two were reportedly spotted together at the night club.

Earlier, there was a report that Sussanne and Arjun were spotted together at a coffee shop in Juhu, following which Hrithik's ex-wife claimed that stories are being "fabricated" about her.

"Persistent speculation in the media has made me realise that idle Bollywood gossip mongers, who are influential, are insistent on spreading rumours and lies about me. Stories are fabricated on upcoming weddings and meetings in coffee shops," IANS quoted Sussanne as saying then.

It was rumoured that Sussane and Arjun's closeness resulted in her divorce with Hrithik and that she was planning a second marriage with Arjun. However, Sussanne and her family have denied all the rumours.