When they patched up

Simbu - Dhanush
 

Considered as competitors in the industry, the two became close pals during an awards ceremony in Dubai recently. They even sang Dhanush's viral rage Kolaveri on stage together, thus giving rise to speculation that the two have made up and became friends. Subsequently, the two partied together. The recent surprise party organised by Simbu to celebrate Dhanush's birthday is an indication that they're bonding big-time.

Source : Time Of India