Due to their undeniable on-screen chemistry, the "W Two Worlds" lead stars Lee Jong Suk and Han Hyo Joo have been rumored to be dating each other. Now, recent situations have triggered more speculations that their dating off-screen.

Lee Jong Suk and Han Hyo Joo made an impressive performance as a couple in the fantasy romance drama. Their tandem convinced fans they are both secretly romantically involved with each other.

To recall, Soompi reported that both Lee Jong Suk and Han Hyo Joo said that they are a perfect match for each othe in an interview to promote the MBC drama series.

"Lee Jong Suk looks like he just came out of a manhwa (Korean comic book)," the 29-year-old actress said.

Then Lee Jong Suk returns the compliment, saying, "I'm a huge fan of Han Hyo Joo. She's charming."

Later on, Soompi reported the stars confessed that they are each other's ideal types.

Interestingly, photos and videos of the duo have been circulating online for their alleged public display of affection during "W Two Worlds" filming.

Moreover, new photos and videos revealed that both Lee Jong Suk and Han Hyo Joo are in Japan, sparkling rumors they are together planning for some romantic getaway.

However, it was learned that Lee Jong Suk went to Japan for his Asia Fan Tour meeting scheduled on September 25, while Han Hyo Joo is reported to be having a photo shoot.

Though both "W Two Worlds" leading stars have not confirmed their alleged romantic relationship, fans are hopeful that they could at least do one more drama together in near the future.