It looks as though not everything is perfect in paradise for Jennifer Aniston and her fiancé Justin Theroux. According to a new report, the actor was spotted flirting with other women while he was out and about in New York City this past week.

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Life & Style reports on Friday that Theroux was caught being rather flirtatious with Girls actress Alison Williams.

A source told the magazine, "He twirled a cigarette, joked and flirted with her" during a recent night out at an Emmy Awards after party.

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What's more, it looks as though Theroux had a wandering eye for another Hollywood actress too. He reportedly got up close and personal with Robin Thicke's estranged wife Paula Patton earlier this year, too. The two supposedly "huddled so close, their lips almost met."

The source added that when Aniston found out about Theroux's behavior, she became immediately irate with him. The insider adds, "After friends tipped Jennifer off about his behavior, she ripped him a new one."

Despite the reports, Aniston recently went on the record to reveal how "happy" she is in her life with Justin Theroux.

According to E! Online, the former Friends star couldn't hide her happiness while she was promoting her new film, Cake, while at the Toronto International Film Festival on Thursday.

Aniston told reporters, "Justin is probably one of the funniest human beings that I've ever encountered. I have the great fortune to laugh a lot. We laugh a lot."

Tags: Jennifer Aniston Justin Theroux