Jennifer Aniston and Justin Theroux are sparking rumors that their relationship may be in peril. Is it possible that things are over for the former Friends star and her fiance? Sources say the two have put their wedding plans on hold.

“There is absolutely no wedding talk or planning going on,” a source close to Jen and Justin said in an interview with RadarOnline. “Publicly the couple is saying it’s because they are just too busy with work, but if they wanted to get married, it would happen.”

“The relationship is definitely at an impasse,” the source added. “Either it’s going to fizzle out, which seems likely, or they get married.”

Jennifer Aniston has been engaged to Justin Theroux for 18 months now. Fans note they haven’t spotted the two together since a Mexican vacation back in December. They two haven’t been photographed together since that time.

Jen recently turned 45 years old, and it is reported that Justin wasn’t with her to celebrate her birthday. Instead she spent the day with former Friends costar and BFF Courteney Cox. Jen and Courteney joined Tobey Maguire’s wife Jennifer Meyer and Jennifer’s hairstylist Chris McMillan at the Soho House in Los Angeles for a 45th birthday dinner.

Some find it a bit peculiar that Jennifer Aniston stayed behind in L.A. when Justin Theroux attended Philip Seymour Hoffman’s funeral in Manhattan on February 7th, too. Do you suppose they will show up at the Oscars together on March 3rd? They walked the red carpet together for the 2013 Oscars.

It wasn’t so long ago that people feared Justin Theroux was in a relationship with Jennifer Aniston simply to ride her coattails to success. Hopefully now that he has risen a bit in the acting world he isn’t thinking twice about marrying the actress.

Do you think Jennifer Aniston and Justin Theroux will ever tie the knot? And if he intends to do so, what on earth is he waiting for?

Image via Wikimedia Commons