Legend And Teigen
John Legend allegedly cheated on fiancée Chrissy Teigen. Instagram/John Legend

There may be a halt to their planned wedding, after singer John Legend was spotted kissing a woman who was not his fiancée, Chrissy Teigen.

The 34-year-old was at Manhattan club Acme Friday night, and an insider who was in attendance told the New York Post’s Page Six that his male friends started talking to “two pretty girls in their late 20s, one blonde and one brunette” at the next table. After “chatting all night,” the blonde went to the bathroom after 1 a.m., and “John followed her.”

Just days ago, Teigen spoke about her upcoming wedding to "Showbiz Tonight" and mentioned that she had chosen a “soft and gorgeous” Vera Wang gown.

The 27-year-old Sports Illustrated model has been dating the nine-time Grammy winner for seven years. They got engaged in December 2011.

Days prior to the incident at Acme, Teigen tweeted Monday, “I honestly think so many more of us would get along if you didn’t want to [expletive] my fiancé.”

After Legend followed the unidentified woman to the bathroom, Legend pulled the woman in with him. “He was walking in and just grabbed her arm and brought her with him.”

A witness said the woman later told a friend that she and Legend had “a steamy make-out session.”

Reps for Legend and Teigen have yet to comment.