While the world is eagerly waiting to find out who Colton, 27, gives his final rose to on the season finale of The Bachelor on March 11 and 12, he may have just gave away the ending.
As fans know, Cassie is one of three women who are currently still on the show along with Hannah Godwin and Tayshia Adam.
Colton was spotted on Saturday, March 2, with Gregg, 26, at the gym in Altadena, California, who is best known for his work in Wizards of Waverly Place and Hulu's Runaways.
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He's also known for dating Cassie's younger sister, Michelle, 21. While Colton and Gregg's new found friendship and gym session could totally be a coincidence, fans think it's pretty unlikely.
"Did paparazzi photos of Gregg Sulkin, who’s dating Cassie Randolph’s sister Michelle, with Colton Underwood accidentally just spoil The Bachelor?" One viewer tweeted. Another said, "Colton is really publicly hanging out with Gregg Sulkin...and expects us not to know who he ends up choosing?! When Gregg is dating her sister?!"
What do you think? Did Colton just spoil the ending to his season of The Bachelor? Let us know your thoughts in the comments below!