The on-screen chemistry of Sam Heughan and Caitriona Balfe in "Outlander" has been a huge part the series' success. And with Season 3 on the way, fans keep a watchful eye for the couple as rumors of the two dating continues to hound them.

It can be recalled that Heughan who portrays the role of Jamie and Balfe who plays as Claire in "Outlander" have been bombarded with dating rumors as the two seem to have that special chemistry on-screen. The rumor intensified following Heughan's post on Twitter calling Balfe his "wifey" when he congratulated her for winning the Outstanding Lead Actress in Entertainment Weekly's Poppy Awards.

Recently, new rumors arise that the two are actually secretly dating. According to reports, Heughan and Balfe have caused delay to the production of "Outlander" Season 3 as they have been disappearing on set during breaks. The same source also added that the two have been "inseparable" since the first day of filming the upcoming season.

Rumors also claim that Heughan and Balfe were spotted "flirty" with each other, on and off screen. "Sam and Caitriona were taking a short break between scenes when I saw them off to the side, holding hands and Sam was even whispering in her ear," a source claimed.

Meanwhile, fans anticipate whether the pair will have more intimate scenes in "Outlander" Season 3 as compared to last time. It can be recalled that fans were disappointed in season 2 as Heughan and Balfe's characters have less intimate scenes than expected.

This time, fans will be pleased to know that executive producer Ronald Moore has recently confirmed that there will be more of what fans have always wanted. However, it remains unclear whether Moore meant more sexy scenes for Heughan and Balfe or the other cast.

Are Heughan and Balfe really dating? Or is it just mere on-screen chemistry? Catch more of Jamie and Claire when "Outlander" Season 3 returns.