"Regret is ruining the lives of countless people by stealing their joy! #NOREGRETS Sure u wish u did some things differently, but no sense in becoming burdened with regret over things u have no power to change #NOREGRETS," Rihanna wrote on Twitter.
"You are not Gods to judge us," said Brown.
For the first time since the release of both songs, it seems Rihanna is feeling the pressure of fans and critics but claims after asking God forgiveness, you "leave your regrets in the past".
"Ask God for forgiveness, and leave your regrets in the past! #NOREGRETS," said Rihanna.
In related news, Rihanna has begun working on her Sky Living show, slated to air in the UK. Over the weekend she confirmed that work had begun, telling a fan "exec producing a tv show today in London". Hosted by Nicola Roberts the fashion based show will focus on finding a top designer.