US pop star Ariana Grande has announced her engagement on Instagram to realtor Dalton Gomez by sharing a photograph of a diamond ring he gave her. The couple has been dating for nearly a year. Ariana posted four photographs in all. Besides a close-up of the oval stone apparently set on a platinum ring, she has also shared three mushy images of the duo, who were reportedly dating since the start of the year. “Forever n then some,” she wrote as caption with the pictures on her verified Instagram account.