"Bachelor In Paradise" Season 1 ended with happy ending for two couples. While Michelle Money and Cody Sattler decided to stay together, Marcus Grodd and Lacy Faddoul got engaged. However, the latest updates suggest there is trouble brewing up in one of the winning couples' paradise. Media outlets are reporting that Marcus Grodd cheated on his fiancé Lacy Faddoul during their courtship period. Read on to find out the details.

In Touch Weekly report claims that "The Bachelorette" alum from Andi Dorfman's season stepped out on "The Bachelor" alum from Juan Pablo's season after he proposed her on "Bachelor In Paradise" finale. The report notes that Marcus Grodd "secretly started dating" another woman named Sydney Rae James.

Sydney Rae James also happens to be a reality TV show star and appears on Jessie James and Eric Decker starrer "Eric & Jessie: Game On." An unnamed source provided inside details about Marcus Grodd and Sydney Rae James' alleged date.

The source told the entertainment news publication that on their date, Marcus Grodd and Sydney Rae James ended up kissing each other. He reportedly kept Sydney in dark by hiding "his engagement ring from her." The report notes, oblivious Sydney believed that Marcus' relationship with Lacy Faddoul "was over."

Furthermore, the source disclosed to the celebrity news magazine that on their date, Marcus Grodd "was all over" Sydney. As for Lacy, she is reportedly preparing for their wedding and is unaware of Marcus' acts. The source notes that if she finds out that Marcus Grodd is cheating on her, "she'd flip."

Marcus Grodd is a 26-year-old sports medicine manager from Dallas and Lacy Faddoul, also 26, is an owner of a nursing home from LA Jolla. The couple met on "Bachelor in Paradise" and fell in love quickly during the 3-week filming process of the 7-part show. People revealed that Marcus Grodd popped the question to the bachelorette with Neil Lane with a 3.68-carat diamond and platinum ring. As for their wedding date, they would reportedly like to wait for another year before they tie the knot.

Meanwhile, contrary to cheating reports, Lacy Faddoul has been actively sharing updates about her relationship on social media. On Sept. 15, Wetpaint reported that the bachelorette shared her first photo with Marcus Grodd at his Texas home on Instagram. Lacy captioned the Instagram photo: "My loves and I watching the season finale of #bachelorinparadise #texas #abc #shitzu." What do you think about the cheating rumours? Do you think Marcus Grodd could be unfaithful to Lacy Faddoul?