While John and Bipasha continue to deny rumours of their split, according to a source the couple seems to be having some serious problems.

According to the latest buzz the cracks began appearing in their relationship since April when John was shooting in Afghanistan for his film Kabul Express.

At that time Bipasha was shooting in Rio for Dhoom 2. She was very disturbed and everyone thought that it was because it was beacuse of John.

Says a close source "One day after having a conversation with John over the phone, the bong actress simply broke down and began weeping profusely. She confided in Abhishek Bachchan with whom she shares a close friendship."

As Abhishek also shares a good rapport with John he did call him up to sort things out. In fact, Ash too felt bad for Bipasha.

However recently when the actor took off for a month long tour on a worldwide concert, he barely called Bipasha. Whenever Bips questioned him for not calling her, he would give the excuse of not being able to get through.

Rumour has it that John was going out with another pretty lass quite often while on the tour.

Recently too it was claimed that John and Bips had a huge public argument after which both of them have not spoken to the other. But John has denied the rumours of their break up and Bipasha too refuses to comment on such rumours.