Former BJP leader Kalyan Singh, who recently parted company with Mulayam Singh Yadav, on Monday, claimed that SP supremo cannot do politics without Amar Singh. He said, Amar Singh is very good leader, orator and excellent political manager and an asset for the Samajwadi Party. <br/><br/>Taking pot-shots at Mulayam Singh, he said, the SP Supremo is in habit of making friends for personal benefit and deserting them later. Kalyan Singh claimed that Amar Singh was piqued with the situation within the party. Defending Amar Singh, who had been attacked by some workers for the SP's defeat in Firozabad, Kalyan said the decision to field Dimple Yadav was that of Mulayam Singh and no one should be blamed for it.