Joshua Jackson & Costar Ruth Wilson's Steamy 8-Hour Date Exposed

This is getting complicated! Just after fans thought Joshua Jackson and Diane Kruger were resuming their 10-year relationship, he's caught on a date with another woman!

The 38-year-old actor was spotted having dinner and drinks with costar Ruth Wilson in the East Village in New York City on Aug. 22.

Eyewitnesses claim The Affair costars were eating and drinking for eight hours, and by the end of the night, they headed back to the same hotel together.

Joshua and Ruth's romantic date night comes right on the heels of OK! magazine revealing that they've had some chemistry for quite some time.

Joshua "texted Ruth nonstop during the show's hiatus. Now that they're shooting again, he's constantly touching her and whispering in her ear," an on-set insider told OK!.

And he's not the only one interested — the 34-year-old British actress has admitted to being a fan of Joshua's since his Dawson Creek days. The insider also added that she "completely lights up whenever he's near her."

If the romance rumors turn out to be true, his ex Diane could be in for a shock, especially after she and Joshua were caught just days ago getting intimate at the airport. But as Star readers know, Joshua may not be ready to commit to Diane again after she was accused of cheating on him while they were together with her costar Norman Reedus.