Jennifer Aniston is starting to worry that time is running out for her. She reportedly has concerns that she might "never find love again."

An anonymous source tipped OK! magazine the matter for its February 21 issue. As alleged, her 53rd birthday is a "bittersweet" one because she is finding it "tough not having someone special" in her life.

It is said to be not due to the lack of trying as she previously noted that she was "ready to share" herself with another person. But, it is reportedly because of her attitude of being "incredibly picky with men."

The insider continued that Aniston has become "a bit of a recluse" as she now opts to spend more time alone at home. She is "feeling sorry for herself" than meeting or going out with friends.

Jennifer Aniston allegedly throws herself to shoots and other business ventures to stay busy. Although she checks in with her friends from time to time, it is always "work and more work" for her.

The informant asserted, though, that despite the upward trajectory of her career these days, "it does not fill the void." She could not even hide her "sorrow" on the set of "Murder Mystery 2" as she appeared "sad" and "was far from her usualy bubbly self."

Amid all the allegations, however, no proof has come to light to prove the story. It is unclear where or how the insider obtained the information about the "Friends" actress's life, making the entire narrative questionable.

It is likely that the latest claims are mere rumors, which are in time for her birthday. She turned 53 on February 11 and showed off her gold tassel pants on social media to mark the special day.

People said that Jennifer Aniston took her appreciation and gratitude to Instagram, where she posted a video of herself during her birthday. She appeared to have celebrated the day "in style" with her unique bottoms.

As seen in the clip, the actress smiles for the camera while shaking her foot to move the gold tassels. She accompanied the video with a caption, thanking her "family, friends, and fans for celebrating her special day."

Jennifer Aniston, also, referred to herself as a "blessed girl." She explained that she was "filled with so much gratitude for all the love that poured" over her.

As for her love life,  the "Wanderlust" actress already previously asserted that she is "very happy," single. Although she would not rule out meeting someone, she has reportedly remained happy with her girlfriends.