Emma Swan may find herself in a gray area when it comes to love on Once Upon a Time, but portrayer Jennifer Morrison has never had trouble reeling in the dudes. She once dated co-star Sebastian Stan (Jefferson), but it’s another hunk that has us feeling pretty jealous of Jennifer’s love life. Which Chicago Fire star did she used to date?

Wetpaint Entertainment asked Viggle LIVE! users that exact question during the March 30 episode of Once Upon a Time Season 3, Episode 15 (“Quiet Minds”) — and the results are in.

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We couldn’t fool you guys, because 57 percent of users correctly guessed that Jennifer was once linked to House, M.D. star Jesse Spencer. The rest of the votes were split between Jesse’s Chicago Fire co-stars Taylor Kinney and Charlie Barnett, who pulled in 23 percent and 20 percent of the vote, respectively.

It’s pretty common knowledge that Taylor Kinney is currently in a relationship with pop sensation Lady Gaga, though his hunkiness would definitely work with badass Jennifer. The OUAT star and Jesse dated from 2004 to 2007, so it’s been quite a while since he put out her fire.

Once Upon a Time airs Sunday nights at 8 p.m. ET on ABC.

Do you want to test your TV knowledge? Not only is it easy, but you also get rewarded just for watching your favorite shows! All you have to do is download the Viggle app, get watching, and check into Viggle LIVE!

Carson Blackwelder is an Assistant Editor at Wetpaint Entertainment. Follow him on Twitter and Google+!