The 32-year-old popped the question to his girlfriend Monday, which coincided with her birthday, while on a romantic trip to Paris, France, reports femalefirst.co.uk.
A statement on Blue's official Facebook page reads: "It is with great pleasure we are pleased to announce the engagement of Antony Costa and his beautiful girlfriend Rosanna. Antony surprised Rosanna on her birthday with a visit to Paris where he asked for her hand in marriage and she happily said yes.
"Everyone in Blue and the entire management team wish both Rosanna and Antony the very best for the future and we are all looking forward to the wedding."
The British band also consists of Duncan James, Lee Ryan and Simon Webbe.
--IANS (Posted on 24-12-2013)