• Nick Viall attends the Pitchfork after-party at Virgin Hotels Chicago with a performance by Vic Mensa at The Virgin Hotel on July 17, 2015 in Chicago, Illinois.

Nick Viall attends the Pitchfork after-party at Virgin Hotels Chicago with a performance by Vic Mensa at The Virgin Hotel on July 17, 2015 in Chicago, Illinois. (Photo : Jeff Schear/Getty Images)

A total of 30 women will be vying for Nick Viall's heart in "The Bachelor" Season 21. However, the show will also feature 29-year-old Liz, who reportedly had a one-night-stand with Viall in January 2016.

According to his interview with ET, Viall confessed that when he saw Liz, he knew exactly who she was and recognized her instantly. Coincidently, Nick and Liz met for the first time at "The Bachelor" spinoff, "Bachelor in Paradise," wedding of Jade Roper and Tanner Tolbert. This is where the two hit off instantly and shared a night of passion.

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Fast-forward a year and Viall meets Liz again, this time at the sets of "The Bachelor" where she will be competing with 30 other women. Liz came to the show with hopes to turn her fling into a serious relationship. However, Viall seems reluctant "out of fairness to the rest of the women," as he does not want to give Liz special treatment because they have a history together.

Meanwhile, at "The Bachelor's" season premiere, Viall was asked about his relationship status after the show and if he has a fairytale ending to his season. To which he replied that he may get engaged with someone, or maybe not. Viall refused to confirm or deny if he will be betrothed as the season ends, E! News reported.

It is not surprising to see that the two-time "The Bachelorette" finalist knows how not to accidentally expose show spoilers. Everybody saw what happened to Ben Higgins in the show's previous season when he fell for more than one woman. However, Viall chose his words very carefully when he said that it may or may not have happened with him on the show. He asks his fans to watch the show to know more about his romantic journey on "The Bachelor."

"The Bachelor" airs Mondays at 8 p.m. on ABC.

Watch the show's sneak preview below: