After Jennifer Lawrence caused speculation that she is engaged to actor Nicholas Hoult, the pair was photographed together in London on Monday.

A fan took a picture of Hoult talking on his cellphone while Lawrence chatted with a partygoer at an afterparty for The Hunger Games: Catching Fire premiere in London. The unknown woman who took the photo also photobombed the snapshot.

Jennifer Lawrence Nicholas Hoult Together Again, Rekindle Romance on 'X-Men: Days Of Future Past' Set 

Lawrence sparked rumors that she and Hoult were set to tie the knot after she was photographed wearing a diamond ring on her wedding finger last week. 

Yahoo's OMG! U.K. published a photo on Monday of the actress sporting a square-shaped sparkler at a press event. In the photo, the 23-year-old was sitting alongside director David O. Russell at the event held in Hollywood, Calif., on Friday, Nov. 8.

See Lawrence's engagement ring photo here.

However, E! News quoted an insider on Wednesday who said the happy couple is "not engaged."

"The ring is not an engagement ring," said the source.

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Lawrence and Hoult reignited their relationship this summer when they began working together again on X-Men: Days Of Future Past, a source told Us Weekly.

In the film, Lawrence plays the younger Raven Darkhölme/Mystique. (Rebecca Romijn played the raven-haired beauty in the first X-Men film.) Hoult is also reprising his role as Hank/Beast for the upcoming film. He has a cult following for his zombie movie Warm Bodies and his last film Jack The Giant Slayer, which arrived in theaters in the spring.

Lawrence's next film, Hunger Games: Catching Fire will arrive in theaters on Nov. 22 while X-Men: Days of Future will hit the big screen in 2015.