Bob Harper opened up about his brief relationship with Shahs of Sunset star Reza Farahan on last night's episode of Watch What Happens Live.

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After a fan brought up rumors regarding the pair's possible past romance, Harper, who was egged on by The Real Housewives of Beverly Hills star Lisa Rinna, came clean about his "thing" with Farahan.

"We had a thing," Harper told host Andy Cohen and his fellow guest, Rinna, according to an Us Weekly report on Wednesday. "A very very long time ago... It was a tawdry little thing."

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Although their relationship was brief, Harper insisted, "I love Reza, I love him." Farahan, however, is currently engaged to Adam Neely, whom fans have seen on Shahs of Sunset.

Last year, on Shahs of Sunset season 3, Farahan and Neely traveled to Palm Springs, Calif. with the rest of the cast. During their trip, Farahan proposed to Neely.

"I finally met the love of my life," Farahan wrote in his Bravo blog after the episode aired. "I've lived my life with one foot in and the other out. [Getting engaged] was the catalyst for me to shut the door on my wh*reish ways for good!"

As for what Farahan has said about himself and Harper, he hinted at the romance years ago on WhoSay.

For more of Harper's appearance on Watch What Happens Live, check out the video below.