He was so excited when she said yes he promptly dropped the ring down a grate underfoot.
His girlfriend said yes, the New York Police Department said Saturday, but the unidentified man fumbled the engagement ring.
"I can not thank you enough, although I will try", Englishman John Drennan said in a tweet directed at the NY police Sunday.
The New York Police Department, aided by social media, reunited a tourist couple with their lost engagement ring on December 2, 2018. "Our officers rescued it & would like to return it to the happy couple", NYPD wrote on Twitter.
The couple asked police for help, and emergency service officers tried unsuccessfully to locate the sparkler.
But don't worry, thanks to the power of the internet, the story has a happy ending.
La presencia del príncipe heredero ha sido cuestionada
Las imágenes muestran a Macri y a Bin Salman sentados en sillones dispuestos en círculo y acompañados cada uno por sus colaboradores.
They've since been identified by the New York Times as English couple John Drennan, 36, and Daniella Anthony, 34.
The NYPD Special Ops team went to the area to recover and clean the lost engagement ring Saturday morning.
"We still haven't found our "almost engaged" couple WANTED for dropping their ring in Times Square.
Love, John, Daniella, and the NYPD". Eventually, they found it.
Listen to Newsbeat live at 12:45 and 17:45 every weekday on BBC Radio 1 and 1Xtra - if you miss us you can listen back here. "Congratulations!" the NYPD tweeted. "Help us find them?" The couple was finally informed about the whole hullabaloo happening around their ring on Twitter and they were reunited with the ring.