Lee Jong Suk and Han Hyo Joo's popularity skyrocketed internationally after starring as a couple on MBC's fantasy romance hit drama, "W Two Worlds."

The couple's popularity was proven after the Hallyu on-screen couple received more projects individually. Moreover, Han Hyo Joo has been awarded "Top Excellence Awards" during the recently concluded APAN Star Awards 2016.

Though, the fans of "Jongjoo" couple are wishing to see their favorite couple back on-screen together, they are still rejoicing as the on-screen lovers are back together for a photoshoot.

Interestingly, more reports surfaced claiming that the on-screen couple are officially dating. Fans are quick to provide proofs for their secret relationship.

One photo posted on Instagram showed Han Hyo Joo and Lee Jong Suk autograph for a restaurant owner. Fans speculated the couple that their romance are for real and that Han Hyo Joo is giving clues to their fans.

The translated caption says, "From cartoon to a drama, from a drama show to reality. Even though it's an autograph.Kangchul and Yeonjoo met in a Fried Chicken Place in Hannam Dong. Super pretty Hyo Joo and Handsome Jongsuk. We are supporting you two!"

Moreover, according to reports, Lee Jong Suk waited for the actress to celebrate her award from APAN 2016. Han Hyo Joo wasn't able to come on the award's night due to her photoshoot commitments abroad.

Meanwhile, some speculated that since the rumored couple are now working on similar projects, Han Hyo Joo might be invited and come to Lee Jong Suk's fan meeting on Singapore.

However, no official announcement from both Lee Jong Suk and Han Hyo Joo's agency yet about this report.