The 20-year-old actor starred in the Danny Boyle-directed film alongside Pinto, 25, where their love blossomed.
Patel said to UK newspaper The Sun: “It is weird now because every day when I am filming I get a call from Mum, and she says: ‘So I hear you are getting engaged now?’
“We always laugh about these things. The last rumour I heard was that me and Freida were looking for a wedding cake in LA. Then we were going to fly it down to India to have our wedding there.”