Robert Pattinson and Kristen Stewart

Usually cagey about their relationship, Robert Pattinson and Kristen Stewart let their guard down at the NJ wedding of their friends Kevin Turen and Evelina Oboza on Saturday.

A source told Showbiz Spy that  “Rob and Kristen were all over each other” at the event.

The celebration featured an area where guests could pick up instruments and play music, of which Pattinson took full advantage, according to the source.

“Rob sang, Andrew [Garfield] played the bongos, Zac [Efron] played the guitar,” the source told Showbiz Spy.

Pattinson and Stewart are rumored to be planning their own walk down the aisle - whether Stewart caught the bouquet on Saturday or not.

Finally becoming less private about their relationship- even kissing in public at the Cannes Film Festival earlier this year- Pattinson and Stewart also intend to marry, at least according to Us Weekly (June 11).

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