Ricky Alvarez

Ariana Grande may have rekindled her romance with her ex-boyfriend, Ricky Alvarez, dropping another major hint ... this time, during her Monday night concert in NYC. The singer was performing Thank U, Next" on stage at the Barclays Center in Brooklyn when she switched up the lyrics to the 2018…

Ariana Grande's ex-boyfriend is still very much in the picture ... 'cause Ricky Alvarez joined her for a Fourth of July grocery run before the pair headed to her parents' house for the holiday. Ariana and Ricky hit up Whole Foods in Florida Saturday, loading up on groceries before making their way…