• "Arrow" season 4 premieres on The CW on Oct. 7.

"Arrow" season 4 premieres on The CW on Oct. 7. (Photo : Twitter/CW_Arrow)

Dating rumors between "Arrow" stars Emily Bett Rickards and Colton Haynes after the two were spotted vacationing in Greece. The alleged couple has been posting a series of photos from their trip in Instagram.

In one of the photos posted by Rickards, Haynes was featured kissing the former on the cheek. The photo was them captioned, "Baklava," in reference to a popular Greek dessert.

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Another photo shared by Rickards via Instagram featured the "Arrow" co-stars drinking a glass of wine, while smiling and looking at each other straight in the eyes.

Meanwhile, Haynes also shared a beautiful photo of himself with Rickards hugging each other in what he called "paradise."

"Woooo!! My boo @emilybett on top of the world #Paradise," he captioned the photo.

Rickards and Haynes worked together in "Arrow" for two seasons. The latter eventually left the series ahead of its third season because he reportedly only signed a two-year contract with "Arrow" creators and network, according to Beautiful Ballad.

Rickards and Haynes have not responded to speculations that they are indeed a couple, but based on the pictures they recently posted on Instagram, it would be difficult to think otherwise, Empty Lighthouse reported.

In other news, "Arrow" kicked off its promising third season with episode entitled, "The Calm." However, the series struggled to live up to fans' expectations of developing a clearer and more exciting direction for the series.

"Arrow" was recently renewed by The CW for season 4.