Ranbir Kapoor, Katrina Kaif
Ranbir Kapoor, Katrina KaifReuters

Ever since Ranbir Kapoor and girlfriend Katrina Kaif moved in together in a plush flat in Bandra, rumours of them tying the knot have been doing the rounds.

It has now emerged that the lovebirds, who have been dating for a couple of years, have taken their relationship to the next level and secretly exchanged rings.

Kapoor and Kaif allegedly got engaged in a private ceremony in London on 30 December. The actress' family, who lives in the city, is said to have been present at the ceremony, and Ranbir's parents Rishi Kapoor and Neetu Singh too flew down to the city to bless the couple.

"The engagement was planned by Katrina's family members, who stay in London. It was a very low key affair, with only close relatives present at the do," a source close to the couple revealed to Bollywood Life.

Of late, rumours were rife that the "Barfi" star would extend a formal proposal to Kaif's family to marry her when he joined her and her family in London during Christmas.

With such news, marriage might soon be on cards. Earlier, there were reports that the lovebirds, who are currently busy shooting for Anurag Basu's "Jagga Jasoos", are planning to get married by the end of 2015. 

In November last year, Kapoor and Kaif made a sea-facing penthouse at Carter Road in Bandra their love nest and the duo is reportedly shelling out a whopping ₹15 lakh per month as rent for their dream home.