Salman Khan and Asin take their friendship one step forward

In Vipul Shah's 'London Dreams', Salman and Asin are getting well along and enjoying each others company. They have become extremely clost too one another and Salman is very protective about her. Asin has all Salman's pictures in her bedroom, this too shows that she is very fond of him. Salman is always known to be very protective of his leading ladies.
The source says, that although both have been open about their fondness for each other on sets, but they have not gone public about this. Both of them spend cool moment with each other in London and Chandigarh. The house where Asin is staying in Lokhandwala has been gifted by Salman. He had gifted a house earlier to Katrina.
Is this another realtionship building or is just l friendship?? Time will tell this.